Pressure Seal Final

PRESSURE

SEAL

VALVES

Gate,

Globe and

Check

Cast and

Forged

ASME Class

600 to 4500#

Size

½ - 24”

(15 - 600mm)

A HISTORY OF GROWTH AND EXCELLENCE / MARKET AND CUSTOMERS

A HISTORY OF GROWTH AND EXCELLENCE

DURCON-VICE is a premium manufacturer of industrial valves in Brazil. It combines high standards in technology, quality and productivity, with tradition, experience and reliability.

Founded in 1974, DURCON-VICE employs 250 workers in

4 (four) manufacturing plants in Brazil and the USA. The total plant area is 20 thousand square meters.

The company produces a wide range of high technology valves, with over 2 hundred thousand valves sold, with sizes ranging from 1/4" to 104" and pressure class up to 4500#. We are present in Latin America, North America, Europe and

Asia.

Our QMS is ISO 9001:2000 certified for design, development, manufacture and service. We are also PED

97/23/EC (Pressure Equipament Directive) certified, (CE

Mark).

MARKET AND CUSTOMERS

Thermoelectric power plants and co-generation

DURCON-VICE is specialist in valves and industrial equipment for thermoelectric power plants and co-generation, having sold complete packages of valves and equipment for hundreds of thermoelectric power plants.

2

Chemical and

Petrochemical

Copesul / Quattro

Copene / Brasken

PQU

Rio Polimeros

Grupa Lotos (HDS UNIT)

Steel Mill

CSN

Usiminas

Arcelor Mittal-CST

Cosipa

Power

AES Uruguaiana

ALSTOM Power Brasil

Birchwood Co-Generation

CBC Ind. Pesadas

CGTEE

Eletronuclear

Gerasul

Eletrobolt

Fafen Energia

Foster Wheeler

Furnas Centrais Elétricas

Mitsubishi

Tractebel

Sugar and Alcohol

LDC - Bio Energia

Grupo Equipav

Grupo Cosan

Brenco

ETH - Odebrecht

Abengoa

Petrobras

Promom Engenharia

SIEMENS

Sierra Pacific Power Co.

Termelétrica Araucária

Termobahia

Termelétrica Piratininga

Kvaerner

Snam Progetti

CBI (ABB-Lummus)

CHESF

Eletronorte

Energyworks

Pulp & Paper

Aracruz

Federal Papers

Veracel

Cenibra

VCP

Klabin

DESIGN AND P&D

PRODUCTION CYCLE

SUPPORT AND AFTER-SALES

All valves are designed according to the requirements of the applicable standard, with finite element and

CAD/CAM/CAE/CFD/FEA, Techiniques.

QUALITY ASSURANCE

Provided through our application and techical assistant experts, in our or your own company.

QUALITY CONTROL

We are certified by BVQI in ISO 9001:2000 and PED

97/23/EC (Pressure Equipament Directive) certified,

(CE Mark).

MANUFACTURE

We comply with all requirements for nondestructive examinations (NDE) as radiography, liquid penetrant, ultrasonic, magnetic particle, etc.

TESTS

We have state-of-the-art equipment for the manufacture of valves, from large-sized CNC machines to CNC Machining Centers.

We are able to test valves according to ASME

B16.34 up to pressure Class 4500#.

3

TABLE OF CONTENTS AND GENERAL FEATURES

TABLE OF CONTENTS

A History of Growth and Excellence / Market and Customers

Production Cycle

Table of Contents / General Features

Introduction to Products

Pressure Seal / Stem Seal

Forging x Casting for Valves

Flexible Wedge and Parallel Slides Wedge

Over-pressurization, Pressure Locking and Thermal Binding in Gate Valves: Problems and Solutions

Gate Valves Materials and Features

"T"-Type Globe and Stop-Check Valves

"Y"-Type Globe and Stop-Check Valves

"T" Piston Check Valves

"Y" Piston Check Valves

Tilting Disc Check Valves

Swing Type Check Valves

Actuators and Acessories

How to Specify and Figure Number

Dimensions and Weights

Materials and Features

Dimensions and Weights

Materials and Features

Dimensions and Weights

Materials and Features / Dimensions and Weights

Materials and Features / Dimensions and Weights

Materials and Features / Dimensions and Weights

Materials and Features / Dimensions and Weights

PAGE

16

17

18

19

12

13

14

15

8

9-11

6

7

4

5

2

3

20

21

22

23

GENERAL FEATURES

ORIGIN OF THE THECHNOLOGY

DURCON-VICE has been manufacturing Pressure Seal Valves for more than 35 years and during 10 years under license of the world's largest manufacturer of pressure seal valves.

The Pressure Seal (PS) system uses the process pressure to exercise additional force in the body/bonnet sealing ring, ensuring far superior sealing of this area. The sealing rings are metallic, thus avoiding the possibility of wear or deterioration. The thrust ring above the sealing rings ensures homogeneous distribution of forces in the entire circumference.

CHOOSING VALVE TYPE

Choose the valve type according to the application (gate, globe or check):

Gate valves allow choosing the type of wedge.

Globe, Globe non return stop-check and Check piston valves allow choosing the body construction (“T” or “Y”).

Check valves allow chossing the design: Piston, Swing or Tilting Disc.

SIZE

The valve size must be in accordance with the existing or designed pipe size.

Check valves must take into consideration the flow rate for a perfect operation.

The valves must follow the Pressure Class determined by ASME B16.34, that make a relation bettwen Pressure Class (Standard or special) and design

Pressure, design temperature and body material.

MATERIALS

The chosen materials must be compatible with the application and among others, must be considered the fluid, the pressure and the temperature. In case of doubt, contact our specialists.

4

INTRODUCTION TO PRODUCTS

GATE VALVES

Gate valves

are typically used in on-off services, in applications where no pressure loss and excellent two-directional sealing are required. They are not recommended for control. The ideal operating conditions are fully opened or fully closed. Their use in the intermediate positions (for control) may damage the seat, body and wedge sealing surfaces. Gate valves are usually installed in horizontal piping, with the stem in the vertical position upwards. They may be installed with the stem in another position provided that the manufacturer has been previously noticed at the time of the order, since this implies in design changes and, consequently, in the manufacturing process.

After the closing of the gate valve with the torque required for sealing, the valve must be relieved with 1/8 to 1/4 turn of the stem so as to avoid unnecessary stress in the stem resulting from thermal expansion. Such relief does not imply loss of sealing.

Parallel

Slides

(Wedge)

GLOBE AND GLOBE STOP-CHECK VALVES

Globe valves

are used to control flow and/or block lines, usually installed with the flow direction entering under the disc. The globe valves supplied by DURCON-VICE are available with construction option in “T”, “Y” and Angular (90°). Because of the constructive geometry, the “T” globe valves have pressure loss higher than the “Y” valves. “T” valves are economically superior, due to the smaller weight and easier actuation. Globe valves with angular construction 90° are installed replacing elbows in the piping, saving space. Standard globe valves are designed for control and blocking, however, they are not recommended to be used in control applications for a long period with an opening less than 20%, since it may cause damage to the internal components.

Globe Stop-check valves

must be installed with stem in the vertical position and the flow direction under the plug. When the stem is opened, the fluid pressure under the plug opens the valve, allowing the fluid to pass. When the stem is in the closed position, has sealing capacity in both flow directions. With the stem in the open position, they operate as a piston-type (check) valve. In the closed position, the plug is pushed against the sealing seat by the stem, blocking the flow in the piping, such as in globe valve. Such kind of valve is normally applied in the replacement of two valves, a block valve (gate or globe) and a swing type check valve. The most common applications are in the discharge of pumps or in the protection against reverse flow of equipment connected to a common collector, such as boilers, pumps, etc.

Globe and Globe stop-check valves

are usually operated by Handwheel. Are also available with gear reducer and handwheel, electric actuator or pneumatic or hydraulic cylinder.

"Y" type

"T" type

Flexible

wedge

CHECK VALVES

Check valves

are used to prevent flow reversion in piping. They may be applied in the horizontal or vertical position (only upward flow). Swing-type check valves have low loss of pressure and must be applied preferably when the flow speed is moderate. It is very important the correct sizing of this valve type. Very low or very high flow speeds cause damage to the internal components and shorten valve life.

Applications involving large number of cycles with quick reversion of the flow direction, turbulent flows or pulsating flows must also be avoided.

Contact DURCON-VICE for advice in the selection of the proper product for your application.

"T" piston

Tilting Disc

"Y" piston

Swing

5

PRESSURE SEAL AND STEM SEAL

Pressure Seal, Standard or Live-Loaded design

• The Thrust Ring Absorbs the Force promoted by Internal Pressure;

• Spacer Ring has the right clearance to avoid Gasket deformation or extrusion through it;

• Gasket is made from graphite or silver coated soft steel (to prevent corrosion and galling). It provides the surface for adequate sealing.

• Belleville Springs are responsible for the live-loaded design (Optional). Live-loading stores energy for automatic compensation of bonnet movement during transient loads

(pressure or temperature) while keeping an upward force in the bonnet assuring sealing.

1.

2.

3.

4.

Internal Pressure;

Higher the internal pressure, higher the sealing force;

If the internal pressure decreases, the sealing force decreases too;

Sealing force according to internal pressure.

Stem Seal, Standard or Live-Loaded Design

1.

2.

3.

4.

5.

6.

7.

Backseat.

cone-in-cone design eliminates problems with over-torque;

Leak-off for double packing (optional). A

lantern ring and a leak-off pipe are provided to remove any leakage from the lower packing set;

Heavy two-piece gland.

Live-loading (optional). Belleville springs assure

a permanent load on the packing, even after a long time without maintenance.

For Globe Valves to lower operation torque

when compared to rotating stem. The torque

arm prevents stem rotation, indicates the position and actuates the limit switches.

The non-rotating stem

close roundness, stringent tolerances and superior surface finish, as well as packing chamber superior surface finish, assure effective sealing.

Pre-compressed rings. Each braided graphite

ring is preformed and compressed at installation to ensure extreme tightness and high packing strain.

6

FORGING X CASTING FOR VALVES

Casting

Metal flow within the mold and solidification are the main factors that must be considered to avoid quality problems in cast valves. Recent advances in foundry technology were enormous, mainly due to computational models that made improvements in patterns design and flow geometry during pouring. Even so, these advances were not enough and it is still difficult to achieve quality acceptance of castings for severe applications.

The following problems are possible to happen during the process of pouring metal into the mold cavity and the solidification that follows:

Shrinkage – is the decrease in volume during cooling. Molten metal can be added to compensate for shrinkage that takes place above the melting point, but the contraction during cooling in the solid state must be compensated by oversized mold dimensions.

Segregation – or chemical separation of the melt is the non-uniform distribution of elements in metal. It is usually result of the primary crystallization of one phase with the subsequent concentration of other elements in the remaining liquid. The results of segregation are non-uniform hardness, second-phase precipitations and inclusions of intermetallic or nonmetallic compounds.

Porosity – can be caused by gases coming out of the solution during cooling process. These gases can become trapped between crystals dendrite arms as very small voids.

Crack and Hot Tears - fracture formed prior to completion of metal solidification as a result of the combination of stress concentration from nonuniform contraction and metal’s low strength near melting point temperatures. A hot tear is frequently open to the surface of the casting.

In order to overcome the above problems and to meet X-Ray quality requirements, upgrading of the casting is necessary. The upgrading process relies on the grinding out of the area with problems, weld repair, heat treatment, retest and examination. Only specialized foundries are able to cast high quality castings that avoid all the above problems.

Forgings for High Temperature and Pressure Valves

When compared with casting, forging has several advantages:

Higher strength – recrystallization and grain refinement lead to higher strength. The continuous grain flow, that closely follows the outline of the body, decreases the susceptibility to fatigue and other failures (figure 1).

Comparing with casting, forging has more predictable strength properties that are assured from part to part.

Structural integrity - Forging refines defects from cast ingots or continuous cast bar. Internal flaws are eliminated creating a coherent and uniform metallurgical structure.

Reliability – This characteristic takes into account the higher strength and structural integrity. Forged products are more reliable because hot working refines grain pattern and provides high strength, ductility and resistance properties. Since casting defects occur in a variety of forms, the ability of forgings to meet design requirements consistently is one the most important advantages.

Dimensional Uniformity – Dimensional uniformity of closed-die forging provides excellent control of critical wall thickness.

Fatigue Resistance to Creep Under

Temperature Fluctuation is More

Than Three Times Better for Forging

– The formula for calculating surface stress during frequent temperature fluctuation is:

S

E

× a

( )

S n

1

( )

m

-

T f

S

=

E

Modulus of

Elasticity[psi];

Thermal Expansion of

T m

temperature before shock minus temperature of fluid causing shock;

K

S

= ratio; factor;

K n

intensification factor.

For example, two identical situations except for the material:

T m

T f

E

28 , 8 10

6

, 65 , 3

n

K

S

.

0 For casting material with non-machined internal surfaces.

K

1 .

For

S

internal surfaces.

Forged or machined

Situation 1 – Casting Þ

psi

From the calculation above, it is poss ible to realize the stresses generated in thermal shocks in forging are more than three times smaller.

CONCLUSION

As seen above, forgings show many technical advantages when compared to castings, especially when the subject is reliability. However, for most applications concerning valves, castings after repair and appropriated examination can achieve an acceptable quality and can satisfy the requirements for a safe use.

7

FLEXIBLE WEDGE AND PARALLEL SLIDES WEDGE

1 Flexible Wedge

This kind of wedge / has a flexibility that / allows to compensate distortions in the valve seat caused by piping loads, pressure and temperature variations within normal closure torques and stress limits.

Figure 1 - Flexible Wedge Gate Valve .

2 Parallel Slides Wedge

Manufactured with two parallel discs, each one sliding over its own seat. This kind of valve relies on the upstream pressure actuating on the downstream disc to assure a good sealing. There is no wedging or extra load on the seats allowing a smaller actuator torque.

On the other hand, is a disadvantage the seat wear caused by the sliding disk during actuation.

Figure 2 - Parallel Slides Gate Valve.

8

Figure 3 – Solid Wedge Gate Valve.

3 Solid Wedge

There are Solid Wedge Gate

Valves too. Never use this kind of wedge in high pressure and temperatures

OVER-PRESSURIZATION, PRESSURE LOCKING AND

THERMAL BINDING IN GATE VALVES: PROBLEMS AND SOLUTIONS

1 Overview

Gate Valves, Flexible Wedge or Parallel Slides - or any other kind of double-seated valve - are subject to failure under critical conditions if determined phenomena are not foreseen and/or their consequences neglected during design time. These phenomena are commonly known as:

• Over-Pressurization

• Pressure Locking

• Thermal Binding

These phenomena may cause the inoperability of the valve closure member as will be seen on next items.

Some possible solutions are given too. It is important to remark that the choice for the most appropriated solution depends on the valve application and process design, whose details are known only by process/piping engineer or end user. ASME B16.34 paragraph 2.3.3 reflects this situation, requiring the end user to determine if Over-

Pressurization protection is necessary or not.

2 Problems and Comparison between Flexible Wedge and Parallel Slides Wedge

2.1 Over-Pressurization

Over-Pressurization happens when the trapped fluid between seats of double-seated valve is heated. The trapped fluid expands due to the increase in the temperature what leads to an increase in the pressure.

Example: valve fulfilled in the close position and heated by the boiler.

Over-Pressurization can breach the pressure boundary.

For each 1,8ºF (1ºC) that the temperature raises, the pressure of the trapped fluid can increase about 85 psi

(0,6 MPa).

Figure 1 – Over-Pressurization.

• Both pressure-seal and bolted-bonnet type valves are subjected to Over-

Pressurization. Although bolted-bonnet valves can leak trough the gasket, a rapid temperature transient can breach the pressure boundary.

• Over-Pressurization phenomenon can happen no matter the valve size. Equalization provisions (a solution for this problem as seen forward) are requested to valves

NPS 6 and above, and some times it is necessary to sizes even below.

• Over-Pressurization can happen also in a length of pipe isolated in both ends by valves.

2.1.1 Comparing Over-Pressurization in Flexible

Wedge and Parallel Slides

Over-Pressurization affects the same way both types.

2.2 Pressure Locking

Pressure Locking takes place with Over-Pressurization. The pressure inside body cavity applied to the effective area of the wedge generates a pushing force against seats.

The friction in the seat due to this pushing force can cause inoperability of the valve closure members.

Figure 1 – Pressure Locking.

2.2.1 Comparing Pressure Locking in Flexible Wedge and Parallel Slides

Pressure Locking Problem is much greater in Parallel

Slides, since this kind of gate has a larger effective area exposed to the fluid.

2.3 Thermal Binding

Thermal Binding is another phenomenon that leads to the valve closure member inoperability.

Thermal Binding is caused by the dimensional interference between seat surfaces of the wedge and valve body. This interference happens due to a difference in thermal expansion between wedge and valve body/piping. Example: an open gate valve working in a high temperature (expanded) is closed and subsequently cools down. This will generate a dimensional interference between the involved parts. Stem thermal expansion and mechanical and thermal stresses in the piping contribute for this problem.

2.3.1 Comparing Thermal Binding in Flexible Wedge and Parallel Slides Wedge

Thermal Binding does not affect Parallel Slide Gate

Valves. The spring between parallel slides can easily absorb eventual geometrical interferences between parts.

Flexible Wedge may be affected by Thermal Binding depending on the application conditions (the higher the temperature, the higher is the probability of Thermal

Binding).

9

OVER-PRESSURIZATION, PRESSURE LOCKING AND

THERMAL BINDING IN GATE VALVES: PROBLEMS AND SOLUTIONS

3 Solutions

3.1 Solutions for Over-Pressurization and Pressure

Locking

Once determined that Over-Pressurization and/or

Pressure Locking is a potential problem, the solution is to provide a pressure relief device for the valve body cavity.

Below, some ways that this can be done:

3.1.4 Self-Actuating Equalizing Device (SAED) When

High Pressure can Occur on Both Sides

SAED is a special device that provides a solution for

Over-Pressurization and Pressure Locking while allowing valve to seal in both directions automatically and selfoperated. This means that there is no need for manual actuation or the use of external hardware in the valve for pressure equalization. The way this device works is described below:

3.1.1 Equalizing Pipe or One Side Wedge Hole

The equalizing pipe connects one side of the valve to the valve body cavity. The valve will only seal in one

direction; this means that the equalizing pipe must be on the high pressure side when the valve is closed.

A second way to connect the high pressure side to the valve body cavity is provided by making a hole in one side of the wedge. The same way as the equalizing pipe,

the valve will only seal in one direction.

Port A is connected to one valve side;

Port B is connected to the other valve side;

Port C is connected to the valve body cavity

Figure 1 - Self-Actuating Equalizing Device

High Pressure on the A Port side (Figure 9):

-The shuttle is pushed to seat on the low pressure side.

-The pressure is then equalized between the high pressure side A, and the valve cavity C.

Figure 1 – Equalizing Pipe.

Figure 1 - Hole in the Wedge.

3.1.2 Equalizing Pipe with Valve

The valve can seal from both sides. Note that the pressure

relief is not available when the valve in the equalizing pipe is closed. Equalization only happens when high pressure is on the side B and

Figure 2 - Equalizing

The valve in the equalizing

Pipe and Equalizing Valve. pipe is opened. This means that when the high pressure is on side A, equalization will not happen.

3.1.3 Relief Valve

A valve connecting the valve body cavity to the atmosphere is another way to provide pressure relief. A self actuated valve or a drain valve can be used as seen in the pictures below. The discharge of this valve must be made to a safe location.

Figure 1 - Self Actuated Relief Valve.

Figure 9 - High Pressure on the A Port.

- Any high pressure on the C Port side (valve body cavity) will escape to Port A, preventing over pressure in the valve body cavity.

Reverse Pressure (Figure 10):

-The shuttle is pushed to seat on the low pressure side.

-The pressure is then equalized between the side B and the body cavity C.

Figure 10 - High Pressure on the B Port.

-Any high Pressure on the C Port side (valve body cavity) will escape to Port B, preventing over pressure in the valve body cavity.

Figure 2 - Drain to relief pressure.

10

OVER-PRESSURIZATION, PRESSURE LOCKING AND

THERMAL BINDING IN GATE VALVES: PROBLEMS AND SOLUTIONS

3.2 Solutions for Thermal Binding

Once determined that Thermal Binding can occur, the following solutions are available to eliminate or reduce this problem:

3.2.1 Bypass Pipe and Valve

When the Bypass valve is opened (see Figure 11), the flow warms up both sides of the wedge. The warm up pipe must be near to the wedge; otherwise this solution is not very effective. Bypasses are standardized by MSS SP-45.

3.3 Combined Solutions for Over-Pressurization,

Pressure Locking and Thermal Binding

If determined that Thermal Binding exists combined with Over-Pressurization and/or Pressure Locking, a combined solution of equalizing pipe relief and bypass must be adopted. Below, figures show some possibilities for combined solutions. The right choice depends on the process and the requirement for a bidirectional sealing. (Figure 12)

OVER-PRESSURIZATION, PRESSURE LOCKING

AND THERMAL BINDING IN GATE VALVES:

PROBLEMS AND SOLUTIONS

Figure 11 - Bypass provision.

3.2.1.2 Reduce Temperature Variation

Check the process if it is possible to reduce the temperature variation between opened and closed position of the valve

3.2.2 Back up of the Stem

After the valve is closed, back up the stem about half of the backlash (approximately 1/8 turn). This will give room for dimensional changes due to temperature variation. This is a practical solution for Thermal Binding and Stem Buckling only applicable for manual operated valves or motor operated valves.

3.2.3 Adequate Valve Supporting

Adequate supports can reduce the Thermal Binding problem by reducing pipe stresses.

3.2.4 Use of Parallel Slide Gate Valve

Parallel Slide Gate Valves are not subjected to Thermal

Binding. While evaluating if this is the right solution, the designer must remember the disadvantages of this kind of valves: seat wear, poor sealing under low pressure

(Pressure Class below 600#) and higher susceptibility to

Pressure Locking.

3.2.5 Cycle the Valve near Closure

Stroke the valve several times near closure, or close the valve very slowly, to warm up the stem and wedge.

3.2.6 Use of Position Seating

Depending on the situation, the use of position seating instead of torque seating on closure may be a solution for

Thermal Binding.

Figure 12 – Solutions for Combined Effects.

CONCLUSION

The problems and solutions for Over-Pressurization,

Pressure Locking and Thermal Binding were shown as well as the way that different types of gate valves are affected by them.

Once again, Durcon-Vice highlights that the choice for the right solution depends on the application and the process, whose details are only known by the end user. That is why the responsibility to determine what can be an appropriated solution remains on the end user (according to ASME B16.34 paragraph 2.3.3 and

ASME B31.1).

Final Durcon-Vice Recommendations:

-Use Flexible Wedge for working temperatures until

-Use Parallel Slides for working temperatures above

Feel free to contact Durcon-Vice engineering department for help about any specific application question.

11

GATE VALVES MATERIALS

THREADED BUSHING -

Bronze material, supported by bearing, when applicable, to minimize the torque.

fine finishing, to reduce friction with the packing.

PRESSURE SEAL -

Simplified and

Pressure-aided the body/bonnet sealing.

6

24

23

4

12

11

20

17

15

14

16

21 22

13

9

8

10

18 19

7

2

5

1

ACTUATOR -

May be supplied With handwheel, gear reducer, electromechanical, pneumatic or hydraulic actuator.

YOKE -

Simplified and tubular, make easier the maintenance and replacement of actuators.

PACKING GLAND, HUB and FLANGE -

Manufactured in two self-aligning pieces, recessed in the gland flange eliminates frequent re-tightening.

the bonnet.

SEAT RINGS -

Coated with Stellite and welded to the body, do not obstruct the flow of fluid.

BODY

- Straight flow. Minimizes the pressure loss.

WEDGE -

Flexible, Solid or Parallel: discs with springs and stroke limits by position decrease the cost of automation.

3

15.

16.

17.

18.

19.

20.

21.

22.

23.

24.

Pos.

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

11.

12.

13.

14.

Description

Body

1)

Bonnet

1)

Seat ring

2)

Wedge

2)

Stem

3)

Sealing ring

Segmented ring

Gland hub

Gland plate

Packing

Gland studs

Gland nut

Bushing bearing

4)

Threaded bushing

Safety sleeve

Handwheel nut

Handwheel

Bonnet stud

Bonnet nut

Tubular yoke

Yoke stud

Yoke nut

Spring

Pin

5)

5)

WC B

ASTM A 216 GR WCB

ASTM A 216 GR WCB

MATERIALS ACCORDING TO ASME B16.34

WC 6

ASTM A 217 GR WC6

ASTM A 217 GR WC6

WC 9 C12A C F 8 M

ASTM A 217 GR WC9 ASTM A 217 GR C12A ASTM A 351 GR CF8M

ASTM A 217 GR WC9 ASTM A 217 GR C12A ASTM A 351 GR CF8M

ASTM A 216 GR WCB

ASTM A 216 GR WCB

AISI 410

ASTM A 217 GR WC6

ASTM A 217 GR WC6

LOW CARBON STEEL SILVER PLATED LOW CARBON STEEL SILVER PLATED LOW CARBON STEEL SILVER PLATED

ALLOY STEEL

AISI 410

CARBON STEEL

CARBON FIBER

AISI 410

ALLOY STEEL

AISI 410

CARBON STEEL

CARBON FIBER

ASTM A 217 GR WC9 ASTM A 217 GR C12A ASTM A 351 GR CF8M

ASTM A 217 GR WC9 ASTM A 217 GR C12A ASTM A 351 GR CF8M

AISI 410

ALLOY STEEL

AISI 410

CARBON STEEL

CARBON FIBER

AISI 410 AISI 316

STAINLESS STEEL SILVER PLATED STAINLESS STEEL SILVER PLATED

ALLOY STEEL ALLOY STEEL

AISI 410

CARBON STEEL

CARBON FIBER

AISI 316

CARBON STEEL

TEFLON

CARBON STEEL

CARBON STEEL

CARBON STEEL

ASTM B 584 ALLOY 863

CARBON STEEL

CARBON STEEL

CARBON STEEL

ASTM B 584 ALLOY 863

CARBON STEEL

CARBON STEEL

CARBON STEEL

ASTM B 584 ALLOY 863

CARBON STEEL

CARBON STEEL

CARBON STEEL

ASTM B 584 ALLOY 863

CARBON STEEL

CARBON STEEL

CARBON STEEL

ASTM B 584 ALLOY 863

CARBON STEEL

CARBON STEEL

ASTM A 395

ASTM A 193 GR B7

ASTM A 194 GR 2H

CARBON STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

STAINLESS STEEL

STAINLESS STEEL

CARBON STEEL

CARBON STEEL

ASTM A 395

ASTM A 193 GR B7

ASTM A 194 GR 2H

CARBON STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

STAINLESS STEEL

STAINLESS STEEL

CARBON STEEL

CARBON STEEL

ASTM A 395

ASTM A 193 GR B7

ASTM A 194 GR 2H

CARBON STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

STAINLESS STEEL

STAINLESS STEEL

CARBON STEEL

CARBON STEEL

ASTM A 395

ASTM A 193 GR B7

ASTM A 194 GR 2H

CARBON STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

STAINLESS STEEL

STAINLESS STEEL

CARBON STEEL

CARBON STEEL

ASTM A 395

ASTM A 193 GR B7

ASTM A 194 GR 2H

CARBON STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

STAINLESS STEEL

STAINLESS STEEL

1. Forged b ody and bonnet material available under request.

2.

Seat faces coated with Stellite #6 or 13% Cr.

3.

4.

5.

Heat treated (only for Martensitic Stainless Steels - AISI 410).

Depending on the size and Pressure Class, DURCON-VICE uses bronze, steel or axial ball bearing.

Applied only to parallel Slide Wedge.

12

GATE VALVES, SIZES ½” TO 24” CLASSES 900#, 1500# AND 2500#

Class

Dimensions (mm)

Sizes (inches)

1/2" 3/4" 1" 1.1/2" 2" 2.1/2" 3" 4" 6" 8" 10" 12" 14" 16" 18" 20" 24"

L (BW/SW) 140 140 140 178 216 254 305 356 508 660 787 914 991 1092 1219 1321 1549

L ( FR ) 254 254 254 305 368 419 381 457 610 737 838 965 1029 1130 1219 1321 1549

L ( FRTJ ) 254 254 254 305 371 422 384 460 613 740 841 968 1039 1140 1232 1334 1568

~H

ØV

306

150

306

150

Weight (kg) BW 12.5

13

334

203

15

447

229

16

512

267

20

520

267

23.5

512

280

34.5

575

450

52

760

580

121

4023

640

278

1232

508

440

1410

508

748

2002

800

990

1688

800

1455

2290

800

2100

2535

800

2215

2900

800

5950

L

L ( FR )

L ( FRTJ )

~H

ØV

140

254

254

306

150

140

254

254

306

150

Weight (kg) BW 12,5 13

140

254

254

334

203

15

178

305

305

447

229

16

216

368

371

512

267

20

254

419

422

520

267

23.5

305

470

473

545

356

42

406

546

549

616

450

65

559

705

711

903

640

198

711

832

842

972

750

414

864

991

1001

1346

640

832

991

1130

1146

1483

640

1137

1067

1257

1276

1460

800

1284

1194

1384

1406

1688

800

1986

1346

1537

1559

2340

800

2500

1473

1664

1686

2805

800

4658

1943

1943

1971

3040

800

5950

L

L ( FR )

L ( FRTJ )

264 273 186 232 279 330 368 457 610 762 914 1041 1118 1245 1397 1574 1676

264 273 308 384 451 508 578 673 914 1022 1270 1422 ------

264 273 308 387 454 514 584 683 927 1038 1292 1444 ------

~H

ØV

320

150

320

150

Weight (kg) BW 12,5 13

350

203

21

500

406,4

43.5

448

356

63

559

356

121

650

450

213

775

508

250

815

508

612

1000

640

627

1328

640

1092

1850

800

1849

2070

800

1856

2070

800

2947

2260

800

3830

2464

800

5510

2921

800

7530

Notes:

1.

2.

3.

4.

5.

Face-to-face dimensions (mm), according to ASME B16.10, when applicable, Weights (kg).

Pressure classes according to ASME B16.34 “standard or special” class

Valves 900# up 10”, 1500# up 10” and 2500# up 8” are supplied with gear box reducer.

For BW connections, please inform the piping schedule.

Dimensions, weights and other information of this catalogue are subject to changes.

Ø V Ø V

H

H

Figure

7710

7715

7720

7810

7815

7820

7910

7915

7920

Class

900#

1500#

2500#

Wedge

Solid

Flexible

Parallel

Solid

Flexible

Parallel

Solid

Flexible

Parallel

L (BW)

L (FR)

L (FRTJ)

13

“T” - TYPE GLOBE VALVES MATERIALS

16

THREADED BUSHING -

Bronze material, supported by bearing, when applicable, to minimize the torque.

21 22

STEM - In heat treated stainless steel, with fine finishing, to reduce friction with the packing.

STEM GUIDE - Avoids stem rotation.

PRESSURE SEAL - Simplified and pressure-aided the body/bonnet sealing.

23

12

11

18 19

7

5

24

SEAT SURFACES -

The disc and body seats are hardened to increase the useful life.

BODY - Optimized Kv. Minimizes the pressure loss.

14

17

15

13

20

9

6

2

8

10

1

ACTUATOR - May be supplied with handwheel, impact handwheel, gear

Reducer, electromechanical, pneumatic or hydraulic actuator.

YOKE -

Simplified and tubular, makes easier the maintenance and replacement of actuators.

PACKING GLAND, HUB and FLANGE-

Manufactured in two self-aligning pieces, recessed in the gland flange eliminates frequent re-tightening.

BACKSEAT -

Hardened and contained in the bonnet.

INTERNAL GUIDES -

The disc is fully guided during the stroke.

3

4

Pos.

Description

1.

Body

1)

2.

Bonnet

1)

3.

Seat ring

2)

4.

Disc 2)

5.

Stem

3)

6.

Sealing ring

7.

Segmented ring

8.

Gland hub

9.

Gland plate

10.

Packing

11.

Gland studs

12.

Gland nut

13.

Bushing bearing

4)

14.

Threaded bushing

15.

Safety sleeve

16.

Handwheel nut

17.

Handwheel

18.

Bonnet stud

19.

Bonnet nut

20.

Tubular yoke

21.

Yoke stud

22.

Yoke nut

23.

Stem lock

24.

Ring

WC B

ASTM A 216 GR WCB

ASTM A 216 GR WCB

ASTM A 216 GR WCB

ASTM A 216 GR WCB

MATERIALS ACCORDING TO ASME B16.34

WC 6

ASTM A 217 GR WC6

WC 9 C 12A C F 8 M

ASTM A 217 GR WC9 ASTM A 217 GR C12A ASTM A 351 GR CF8M

ASTM A 217 GR WC6

ASTM A 217 GR WC6

ASTM A 217 GR WC6

ASTM A 217 GR WC9

ASTM A 217 GR WC9

ASTM A 217 GR WC9

ASTM A 217 GR C12A

ASTM A 217 GR C12A ASTM A 351 GR CF8M

ASTM A 217 GR C12A

ASTM A 351 GR CF8M

ASTM A 351 GR CF8M

AISI 410 AISI 410 AISI 410

LOW CARBON STEEL SILVER PLATED LOW CARBON STEEL SILVER PLATED LOW CARBON STEEL SILVER PLATED

ALLOY STEEL

AISI 410

CARBON STEEL

CARBON FIBER

CARBON STEEL

CARBON STEEL

CARBON STEEL

ALLOY STEEL

AISI 410

CARBON STEEL

CARBON FIBER

CARBON STEEL

CARBON STEEL

CARBON STEEL

ALLOY STEEL

AISI 410

CARBON STEEL

CARBON FIBER

CARBON STEEL

CARBON STEEL

CARBON STEEL

AISI 410 AISI 316

STAINLESS STEEL SILVER PLATED STAINLESS STEEL SILVER PLATED

ALLOY STEEL ALLOY STEEL

AISI 410

CARBON STEEL

CARBON FIBER

CARBON STEEL

CARBON STEEL

CARBON STEEL

AISI 316

CARBON STEEL

TEFLON

CARBON STEEL

CARBON STEEL

CARBON STEEL

ASTM B 584 ALLOY 863 ASTM B 584 ALLOY 863 ASTM B 584 ALLOY 863 ASTM B 584 A LLOY 863

CARBON STEEL

CARBON STEEL

CARBON STEEL

CARBON STEEL

CARBON STEEL

CARBON STEEL

CARBON STEEL

CARBON STEEL

ASTM A 395

ASTM A 193 GR B7

ASTM A 194 GR 2H

CARBON STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

ALLOY STEEL

STAINLESS STEEL

ASTM A 395

ASTM A 193 GR B7

ASTM A 194 GR 2H

CARBON STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

ALLOY STEEL

STAINLESS STEEL

ASTM A 395

ASTM A 193 GR B7

ASTM A 194 GR 2H

CARBON STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

ALLOY STEEL

STAINLESS STEEL

ASTM A 395

ASTM A 193 GR B7

ASTM A 194 GR 2H

CARBON STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

ALLOY STEEL

STAINLESS STEEL

ASTM B 584 ALLOY 863

CARBON STEEL

CARBON STEEL

ASTM A 395

ASTM A 193 GR B7

ASTM A 194 GR 2H

CARBON STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

ALLOY STEEL

STAINLESS STEEL

1. Forged b ody and bonnet material available under request.

2.

Seat faces coated with Stellite #6 or 13% Cr.

3.

4.

Heat treated (only for Martensitic Stainless Steels - AISI 410).

Depending on the size and Pressure Class, DURCON-VICE uses bronze, steel or axial ball bearing.

14

“T” - TYPE GLOBE VALVES, SIZES ½” TO 14” CLASSES 900#, 1500# AND 2500#

Class

Sizes (inches)

L

L ( FR )

L ( FRTJ )

~H

ØV

Weight (kg) BW

L

L ( FR )

L ( FRTJ )

~H

ØV

216

216

216

262

220

Weight (kg) BW 11,1

L

L ( FR )

L ( FRTJ )

264

264

264

~H

ØV

262

220

Weight (kg) BW 11,1

--

--

--

*1/2" *3/4"

--

--

--

--

--

--

--

--

--

273

273

273

262

220

11,1

229

229

229

262

220

11,1

Dimensions (mm)

*1" *1.1/2" *2"

254

254

254

305

305

305

368

368

371

325

203

14,7

460

280

30

494

280

70

2.1/2"

254

419

422

593

406

70

3"

305

381

384

767

500

70

384

384

387

482

350

37

305

305

305

460

280

30

308

308

308

262

220

14,7

254

254

254

325

203

14,7

279

451

454

482

350

120

216

368

371

494

280

80

330

508

514

495

406

120

254

419

422

593

406

80

368

578

584

603

500

205

305

470

473

674

500

120

457

673

683

850

500

270

406

546

549

794

580

220

4"

356

457

460

674

500

130

762

1022

1038

1200

750

1280

711

832

842

1394

750

1024

8"

660

737

740

1005

580

576

610

914

927

971

750

790

559

705

711

974

580

520

6"

508

610

613

874

580

360

914

1270

1292

1416

945

2250

864

991

1001

1474

945

1620

10"

787

838

841

1535

750

950

1041

1422

1444

1524

1200

3400

991

1130

1146

2005

1200

2680

12"

914

965

968

1680

750

1400

--

--

--

--

--

--

1067

1257

1276

2005

1200

3200

14"

991

1029

1039

1596

750

1960

Notes:

1.

2.

3.

4.

5.

Face-to-face dimensions (mm), according to ASME B16.10, when applicable, Weights in (kg).

Pressure classes according to ASME B16.34 “standard or special”

Valves with size above 3” are supplied with impact handwheel.

For BW connection, please inform the piping schedule.

Dimensions, weights and other information of this catalogue are subject to changes.

Ø V

Ø V

H

H

Figure Class

7750 900#

7850

1500#

7950

2500#

L (BW)

L (FR)

L (FRTJ)

15

“Y” - TYPE GLOBE VALVES MATERIALS

ACTUATOR -

May be supplied with handwheel, impact handwheel, gear reducer, electromechanical, pneumatic or hydraulic actuator.

17

STEM -

Heat treated in stainless steel with fine finishing in order to minimize the friction with the packing during operation.

21 22

23

STEM GUIDE -

Avoids the stem rotation

12

11

18 19

7

BACKSEAT -

Hardened and contained in the bonnet.

5

24

BODY -

Designed to maximize the Kv, minimizing the pressure loss and the operating costs.

4

3

13

20

9

8

10

6

2

16

14

15

1

YOKE -

Simplified and tubular, makes easier the maintenance replacement of actuators.

and

PACKING GLAND, HUB and FLANGE-

Manufactured in two self-aligning pieces, recessed in the gland flange eliminate frequent re-tightening.

PRESSURE SEAL - Simplified and pressure-aided the body/bonnet sealing.

INTERNAL GUIDES - The disc is fully guided by the body during the stroke seats are hardened to increase the useful life.

Pos. Description

1. Body

1)

2. Bonnet

1)

3. Seat ring

2)

4. Disc 2)

5. Stem

3)

WC B

ASTM A 216 GR WCB

AISI 410

MATERIALS ACCORDING TO ASME B16.34

WC 6

AISI 410

ASTM A 216 GR WCB ASTM A 217 GR WC6

ASTM A 217 GR WC6

ASTM A 216 GR WCB ASTM A 217 GR WC6

ASTM A 216 GR WCB ASTM A 217 GR WC6

WC 9

ASTM A 217 GR WC9

ASTM A 217 GR WC9

ASTM A 217 GR WC9

ASTM A 217 GR WC9

AISI 410

6.

7.

8.

9.

Sealing ring

Segmented ring

Gland hub

Gland plate

10. Gaskets

11. Gland studs

12. Gland nut

13. Bushing bearing

4)

LOW CARBON STEEL SILVER PLATED

ALLOY STEEL

AISI 410

CARBON STEEL

CARBON FIBER

CARBON STEEL

CARBON STEEL

CARBON STEEL

LOW CARBON STEEL SILVER PLATED LOW CARBON STEEL SILVER PLATED

ALLOY STEEL ALLOY STEEL

AISI 410

CARBON STEEL

CARBON FIBER

CARBON STEEL

CARBON STEEL

CARBON STEEL

14. Threaded bushing ASTM B 584 ALLOY 863 ASTM B 584 ALLOY 863

15. Safety sleeve CARBON STEEL CARBON STEEL

AISI 410

CARBON STEEL

CARBON FIBER

CARBON STEEL

CARBON STEEL

CARBON STEEL

ASTM B 584 ALLOY 863

CARBON STEEL

16. Handwheel nut

17. Handwheel

18. Bonnet stud

19. Bonnet nut

20. Tubular yoke

21. Yoke stud

22. Yoke nut

23. Stem lock

24. Ring

CARBON STEEL

ASTM A 395

CARBON STEEL

ASTM A 395

ASTM A 193 GR B7 ASTM A 193 GR B7

ASTM A 194 GR 2H ASTM A 194 GR 2H

CARBON STEEL CARBON STEEL

ASTM A 193 GR B7 ASTM A 193 GR B7

ASTM A 194 GR 2H ASTM A 194 GR 2H

ALLOY STEEL ALLOY STEEL

STAINLESS STEEL STAINLESS STEEL

CARBON STEEL

ASTM A 395

ASTM A 193 GR B7

ASTM A 194 GR 2H

CARBON STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

ALLOY STEEL

STAINLESS STEEL

C12A

ASTM A 217 GR C12A

ASTM A 217 GR C12A

AISI 410

CARBON STEEL

CARBON FIBER

CARBON STEEL

CARBON STEEL

CARBON STEEL

ASTM B 584 ALLOY 863

CARBON STEEL

CARBON STEEL

ASTM A 395

ASTM A 193 GR B7

ASTM A 194 GR 2H

CARBON STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

ALLOY STEEL

STAINLESS STEEL

C F 8 M

ASTM A 351 GR CF8M

ASTM A 351 GR CF8M

ASTM A 217 GR C12A

ASTM A 217 GR C12A

AISI 410

ASTM A 351 GR CF8M

ASTM A 351 GR CF8M

AISI 316

STAINLESS STEEL SILVER PLATED STAINLESS STEEL SILVER PLATED

ALLOY STEEL ALLOY STEEL

AISI 316

CARBON STEEL

TEFLON

CARBON STEEL

CARBON STEEL

CARBON STEEL

ASTM B 584 ALLOY 863

CARBON STEEL

CARBON STEEL

ASTM A 395

ASTM A 193 GR B7

ASTM A 194 GR 2H

CARBON STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

ALLOY STEEL

STAINLESS STEEL

1. Forged b ody and bonnet material available under request.

2.

Seat faces coated with Stellite #6 or 13% Cr.

3.

4.

Heat treated (only for Martensitic Stainless Steels - AISI 410).

Depending on the size and Pressure Class, DURCON-VICE uses bronze, steel or axial ball bearing.

16

“Y” - TYPE GLOBE VALVES, SIZES ½” TO 16” CLASSES 900#, 1500# AND 2500#

Class

Sizes (inches)

L

~H

*1/2"

127

254

*3/4"

127

254

*1"

127

254

*1.1/2"

202

460

*2"

202

460

Dimensions (mm)

2.1/2"

254

571

3"

305

571

4"

356

1006

6"

508

954

8"

660

1718

10" 12"

787

1732

914

1732

ØV 220 220 220 220 220 356 500 500 500 750 750 945

Weight (kg) BW 7 7 7 23 23 100 100 248 340 750 1410 1920

L

~H

ØV

127 127 127 202 202¹ 254 305 406 559 711 864 991

254 254 254 460 460 571 571 1006 954 1718 1732 1732

220 220 220 220 220 356 500 500 500 750 945 945

Weight (kg) BW 7 7 7 23 23 100 100 248 340 750 1410 1920

L

~H

127 127 127 202 202² 330 368 457 610 762 914 1041

254 254 254 460 460 571 571 1006 1116 1200 1694 1422

ØV 220 220 220 220 220 356 500 500 750 750 945 1200

Weight (kg) BW 7 7 7 23 23 100 100 248 420 767 1410 2208

14" 16"

991 1092

1906 1906

945 1200

1920 3510

1067 1194

1906 1906

945 1200

1920 3510

1092 1092

1906 1906

1200 1200

3510 3510

Notes:

1.

2.

3.

4.

5.

Face-to-face dimensions (mm), according to ASME B16.10, when applicable, Weights in (kg).

Pressure classes according to ASME B16.34 “standard or special”

Valves with size above 3” are supplied with impact handwheel.

For BW connections, please inform the piping schedule.

Dimensions, weights and other information of this catalogue are subject to changes.

Ø

V

H

900#

1500#

2500#

L (BW)

17

‘‘T’’ PISTON CHECK VALVES, SIZES ½’’ TO 14’’ CLASSES 900#, 1500# AND 2500#

PRESSURESEAL -

Simplified and pressure-aided in the body/bonnet sealing.

9

6

5

2

INTERNAL GUIDES - The disc is fully guided by the body during the stroke

8

7

L (BW)

H

L (FR)

L (FRTJ)

H

4

1

SEAT SURFACES -

The disc and body seats are hardened to increase the useful life.

3

BODY -

Optimized passage.

Minimizes the pressure loss.

Figure

7760

7860

7960

Class

900#

1500#

2500#

4.

5.

6.

7.

Pos.

1.

2.

3.

8.

9.

Description

Body 1)

Bonnet

1)

Seat ring 2)

Piston 2)

Sealing ring

Segmented ring

Bonnet stud

Bonnet nut

Locking plate

WC B

ASTM A 216 GR WCB

ASTM A 216 GR WCB

ASTM A 216 GR WCB

ASTM A 216 GR WCB

ALLOY STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

CARBON STEEL

MATERIALS ACCORDING TO ASME B16.34

WC 6 WC 9

ASTM A 217 GR WC6

ASTM A 217 GR WC6

ASTM A 217 GR WC6

ASTM A 217 GR WC9

ASTM A 217 GR WC9

ASTM A 217 GR WC9

ASTM A 217 GR WC6

LOW CARBON STEEL SILVER PLATED LOW CARBON STEEL SILVER PLATED

ALLOY STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

CARBON STEEL

1. Body and bonnet avaliable in forged materials under request.

2.

Seat faces coated with Stellite #6 or 13% Cr.

ASTM A 217 GR WC9

LOW CARBON STEEL SILVER PLATED

ALLOY STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

CARBON STEEL

C 12A

ASTM A 217 GR C12A

ASTM A 217 GR C12A

C F 8 M

ASTM A 351 GR CF8M

ASTM A 351 GR CF8M

ASTM A 217 GR C12A ASTM A 351 GR CF8M

ASTM A 217 GR C12A

STAINLESS STEEL SILVER PLATED

ASTM A 351 GR CF8M

STAINLESS STEEL SILVER PLATED

ALLOY STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

CARBON STEEL

ALLOY STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

CARBO N STEEL

Class

Sizes (inches)

L

~H

Weight (kg) BW

1/2"

127

140

5

L

~H

Weight (kg) BW

L

~H

Weight (kg) BW

127

140

5

127

140

5

3/4"

127

140

5

127

140

5

127

140

5

127

140

5

127

140

5

1"

127

140

5

1.1/2"

202

210

16

202

460

16

202

210

16

202¹

210

16

202²

210

16

2"

Dimensions (mm)

2.1/2" 3"

202

210

16

254

238

45

305

238

45

4"

356

400

165

254

238

45

330

238

45

305

238

45

368

238

45

406

400

165

457

400

165

559

398

210

610

398

252

6"

508

398

210

711

626

640

762

626

640

8"

660

626

640

10"

787

840

1190

864

840

1190

914

840

1270

12"

914

840

1190

991

840

1190

1041

840

1270

14"

991

905

1640

1067

905

1640

1092

905

1640

16"

1092

905

1640

1194

905

1640

1092

905

1640

Notes:

1.

2.

3.

4.

Forged body and bonnet material available under request.

Pressure classes according to ASME B16.34 “standard or special”

For BW connections, please inform the piping schedule.

Dimensions, weights and other information of this catalogue are subject to changes.

18

‘‘Y’’ PISTON CHECK VALVES, SIZES ½’’ TO 16’’ CLASSES 900#, 1500# AND 2500#

BODY -

Designed to maximize the Kv, minimizing the pressure loss and the operating costs.

PRESSURE SEAL -

Simplified and pressure-aided the body/bonnet sealing.

9

8 7

H

4

1

6

5

2

L (BW)

SEAT SURFACE -

The piston and body seats are hardened to increase the useful

3 life.

INTERNAL GUIDES -

The Piston is fully guided by the body during the stroke

Figure

7765

7865

7965

Class

900#

1500#

2500#

Pos. Description

1. Body 1)

2. Bonnet

1)

3. Seat ring 2)

4. Piston

2)

5. Sealing ring

6. Segmented ring

7. Bonnet stud

8. Bonnet nut

9. Locking plate

MATERIALS ACCORD ING TO ASME B16.34

WCB Wc6 WC9 C12A

ASTM A 216 GR WCB ASTM A 217 GR WC6 ASTM A 217 GR WC9 ASTM A 217 GR C12A

CF8M

ASTM A 351 GR CF8M

ASTM A 216 GR WCB ASTM A 217 GR WC6 ASTM A 217 GR WC9 ASTM A 217 GR C12A

ASTM A 216 GR WCB ASTM A 217 GR WC6 ASTM A 217 GR WC9 ASTM A 217 GR C12A

ASTM A 351 GR CF8M

ASTM A 351 GR CF8M

ASTM A 216 GR WCB ASTM A 217 GR WC6 ASTM A 217 GR WC9 ASTM A 217 GR C12A ASTM A 351 GR CF8M

LOW CARBON STEEL SILVER PLATED LOW CARBON STEEL SILVER PLATED LOW CARBON STEEL SILVER PLATED STAINLESS STEEL SILVER PLATED STAINLESS STEEL SILVER PLATED

ALLOY STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

CARBON STEEL

ALLOY STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

CARBON STEEL

ALLOY STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

CARBON STEEL

ALLOY STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

CARBON STEEL

ALLOY STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

CARBON STEEL

1. Forged body and bonnet material available under request.

2. Seat faces coated with Stellite #6 or 13% Cr.

Class

Sizes (inches)

L

~H

Weight (kg) BW

1/2"

127

140

5

L

~H

Weight (kg) BW

127

140

5

L

~H

Weight (kg) BW

127

140

5

3/4"

127

140

5

127

140

5

127

140

5

127

140

5

127

140

5

1"

127

140

5

1.1/2"

202

210

16

202

460

16

202

210

16

202¹

210

16

202²

210

16

2"

202

210

16

Dimensions (mm)

2.1/2" 3" 4"

254

238

45

305

238

45

356

400

165

254

238

45

330

238

45

305

238

45

368

238

45

406

400

165

457

400

165

559

398

210

610

398

252

6"

508

398

210

711

626

640

762

626

640

8"

660

626

640

10"

787

840

1190

864

840

1190

914

840

1270

12"

914

840

1190

991

840

1190

1041

840

1270

14"

991

905

1640

1067

905

1640

1092

905

1640

16"

1092

905

1640

1194

905

1640

1092

905

1640

Notes:

1.

2.

3.

4.

Face-to-face dimensions (mm), according to ASME B16.10, when applicable, Weights in (kg).

Pressure classes according to ASME B16.34 “standard or special”

For BW connections, please inform the piping schedule.

Dimensions, weights and other information of this catalogue are subject to changes.

19

TILTING DISC CHECK VALVES, SIZES 2’’ TO 24’’ CLASSES 900#, 1500# AND 2500#

PRESSURE SEAL - Simplified and pressure-aided the body/bonnet Sealing.

H

H

8

12

2

10

6

9

7

11

5

3

DISC SUPPORT - Internal, eliminates leakage and makes maintenance simple.

SEAT SURFACES -

The body seat is hardened to increase the useful life.

4

1

BODY -

Optimized passage.

Minimizes the pressure loss.

DISC -

Spherical and hardened to increase the useful life.

L (BW)

L (FR)

L (FRTJ)

Figure

7780

7880

7980

Class

900#

1500#

2500#

Pos.

1.

2.

3.

4.

5.

6.

Description

Body 1)

Bonnet

1)

Seat ring 2)

Disc 2)

Shaft

Sealing ring

WC B

ASTM A 216 GR WCB

ASTM A 216 GR WCB

ASTM A 216 GR WCB

ASTM A 216 GR WCB

AISI 410

MATERIALS ACCORDING TO ASME B16.34

WC 6

ASTM A 217 GR WC6

ASTM A 217 GR WC6

ASTM A 217 GR WC6

ASTM A 217 GR WC6

AISI 410

WC 9

ASTM A 217 GR WC9

ASTM A 217 GR WC9

ASTM A 217 GR WC9

ASTM A 217 GR WC9

AISI 410

LOW CARBON STEEL SILVER PLATED LOW CARBON STEEL SILVER PLATED

7.

8.

9.

10.

11.

Segmented ring

Bonnet stud

Bonnet nut

Swing disc support

Lock screw

ALLOY STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

AISI 410

STAINLESS STEEL

ALLOY STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

AISI 410

STAINLESS STEEL

1.

2.

12.

Locking plate CARBON STEEL

Forged body and bonnet material available under request.

Seat faces coated with Stellite #6 or 13% Cr.

CARBON STEEL

LOW CARBON STEEL SILVER PLATED

ALLOY STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

AISI 410

STAINLESS STEEL

CARBON STEEL

C 12A

ASTM A 217 GR C12A

ASTM A 217 GR C12A

ASTM A 217 GR C12A

ASTM A 217 GR C12A

AISI 410

C F 8 M

ASTM A 351 GR CF8M

ASTM A 351 GR CF8M

ASTM A 351 GR CF8M

ASTM A 351 GR CF8M

AISI 316

STAINLESS STEEL SILVER PLATED STAINLESS STEEL SILVER PLATED

ALLOY STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

ALLOY STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

AISI 410

STAINLESS STEEL

CARBON STEEL

AISI 316

STAINLESS STEEL

CARBON STEEL

Class

Sizes (inches)

L

~H

Weight (kg) BW

L

~H

Weight (kg) BW

L

~H

Weight (kg) BW

2"

254

200

23

216

210

29

279

215

42

2.1/2"

254

200

23

254

200

29

330

215

42

3"

305

165

35

305

210

29

368

215

42

4"

356

200

60

406

230

30

457

320

58

6"

508

300

68

559

300

145

610

340

166

Dimensions (mm)

8"

660

400

200

711

360

210

762

420

323

10"

787

430

245

864

440

375

914

480

598

1.

2.

3.

4.

Notes:

Face-to-face dimensions (mm), according to ASME B16.10, when applicable, Weights in (kg).

Pressure classes according to ASME B16.34 “standard or special”

For BW connections, please inform the piping schedule.

Dimensions, weights and other information of this catalogue are subject to changes.

12"

914

450

375

991

485

573

1041

556

833

14"

991

570

469

1067

570

718

1118

600

1121

16"

1092

610

959

1194

582

985

1220

680

1434

18"

1219

610

959

1320

680

1455

1348

720

1825

20"

1321

675

1267

1422

750

1930

1448

805

2216

24"

1549

805

2190

1676

898

3321

1678

960

3621

20

SWING DISK VALVES, SIZES 2’’ TO 24’’ CLASSES 900#, 1500# AND 2500#

SEAT SURFACES -

The disc and body seats are hardened to increase the useful life.

12

7

6

5

10

1

PRESSURE SEAL - Simplified and pressure-aided the body/bonnet sealing.

9

8

2

11

L (BW)

H

L (FR)

L (RTJ)

BODY - Optimized passage.

Minimizes the pressure loss

3 4

DISC SUPPORT - Internal, eliminates leakage and makes maintenance simple.

7785

7885

7985

900#

1500#

2500#

H

Pos.

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

11.

12.

Description

Body

1)

Bonnet

1)

Seat ring

2)

Disc

2)

Shaft

3)

Sealing ring

Segmented ring

Bonnet stud

Bonnet nut

Swing disc support

Lock screw

Locking plate

WC B

ASTM A 216 GR WCB

MATERIALS ACCORDING TO ASME B16.34

WC 6

ASTM A 217 GR WC6

WC 9

ASTM A 217 GR WC9

C 12A

ASTM A 217 GR C12A

C F 8 M

ASTM A 351 GR CF8M

ASTM A 216 GR WCB ASTM A 217 GR WC6 ASTM A 217 GR WC9 ASTM A 217 GR C12A ASTM A 351 GR CF8M

ASTM A 216 GR WCB

ASTM A 216 GR WCB

AISI 410

ASTM A 217 GR WC6

ASTM A 217 GR WC6

AISI 410

ASTM A 217 GR WC9

ASTM A 217 GR WC9

AISI 410

ASTM A 217 GR C12A

ASTM A 217 GR C12A

AISI 410

ASTM A 351 GR CF8M

ASTM A 351 GR CF8M

AISI 316

LOW CARBON STEEL SILVER PLATED LOW CARBON STEEL SILVER PLATED LOW CARBON STEEL SILVER PLATED STAINLESS STEEL SILVER PLATED STAINLESS STEEL SILVER PLATED

ALLOY STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

AISI 410

STAINLESS STEEL

CARBON STEEL

ALLOY STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

AISI 410

STAINLESS STEEL

CARBON STEEL

ALLOY STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

AISI 410

STAINLESS STEEL

CARBON STEEL

ALLOY STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

AISI 410

STAINLESS STEEL

CARBON STEEL

ALLOY STEEL

ASTM A 193 GR B7

ASTM A 194 GR 2H

AISI 316

STAINLESS STEEL

CARBON STEEL

1.

Forged body and bonnet material available under request.

2. Seat faces coated with Stellite #6 or 13% Cr.

Class

Sizes (inches)

L

L (FR )

L ( FRTJ )

~H

Weight (kg) BW

L

L (FR )

L ( FRTJ )

~H

Weight (kg) BW

L

L (FR )

L ( FRTJ )

~H

Weight (kg) BW

2"

216

368

371

200

46

216

368

371

200

46

279

451

454

171

85

2.1/2"

254

419

422

200

48

254

419

422

200

45

330

508

514

171

35

3"

305

381

384

185

60

305

470

473

215

60

368

578

584

196

55

4"

356

457

460

200

77

406

546

549

250

123

457

673

683

215

76

610

914

927

323

239

559

705

711

300

145

6"

508

610

613

290

123

Dimensions (mm)

8"

660

737

740

470

380

10"

787

838

841

430

463

12"

914

965

968

450

482

711

832

842

465

266

864

991

1001

560

612

991

1130

1146

605

690

762

1022

1038

425

408

914

1270

1292

508

771

1041

1422

1444

550

1800

14"

991

1029

1039

457

482

1067

1257

1276

508

786

--

--

--

--

--

16"

1092

1130

1140

501

589

1194

1384

1406

558

857

--

--

--

--

--

18"

1219

1219

1232

596

834

1346

1537

1559

660

1265

--

--

--

--

--

20"

1321

1321

1334

660

1102

1473

1664

1686

736

1678

--

--

--

--

--

24"

1549

1549

1568

787

1905

1943

1943

1971

876

2888

--

--

--

--

--

Notes:

1.

2.

3.

4.

Face-to-face dimensions (mm), according to ASME B16.10, when applicable, Weights in (kg).

Pressure classes according to ASME B16.34 “standard or special”

For BW connections, please inform the piping schedule.

Dimensions, weights and other information in this catalogue are subject to changes.

21

ACTUATORS AND ACESSORIES

VALVE ACTUATOR SIZING

The Durcon-Vice procedure for selecting an actuator is to calculate the required torque and thrust to operate the valve at the required service conditions. A safety margin of actuator capability is always allowed for the final actuator selection, but oversized actuators are avoided.

Because of the wide variations in system operating conditions, actuator sizing is based on the following:

ACTUATOR

TYPE

ELECTRIC

PNEUMATIC

HYDRAULIC

HANDWHEEL/

GEAR

ACTUATED

LINE

PRESSURE

Specified by customer

Specified by customer

Specified by customer

70% of CWP unless otherwise advised by customer

DIFFERENTIAL

PRESSURE

(CLOSED)

Specified by customer

Specified by customer

Specified by customer

70% of CWP unless otherwise advised by customer

POWER SUPPLY

Voltage, type, phase and frequency specified by customer

Air pressure specified by customer

Hydraulic pressure specified by customer

200 lb (90 kg) rimpull unless otherwise specified by customer

GEAR ACTUATORS

MODEL

PS Gate

Flexibles Wedge

PS Globe

T Pattern

PS Parallel Slides

Wedge

PS Globe

Y-Pattern

CLASS

600

900

1500

2500

4500

600

900

1500

2500

600

900

1500

2500

900

1500

2500

4 - 6"

4 - 6"

4"

-

-

-

-

-

-

4 - 8"

4 - 6"

4 - 6"

6"

-

-

-

OPTIONAL STANDARD

8" & up

8" & up

6" & up

6" & up

6" & up

6" & up

6" & up

6" & up

6" & up

10" & up

8" & up

8" & up

8" & up

6" & up

6" & up

6" & up

STANDARDIZED YOKE AND

GEAR REDUCERS

The yoke of DURCON-VICE's valves are standardized and allow more flexibility in the assembling of the actuators.

Valves with handwheel may be converted in field into gear reducer or electromechanical actuator with a minimum of new parts.

ELECTRIC AND CYLINDER ACTUATORS

Information required for:

CYLINDER (PNEUMATIC OR HIDRAULIC)

1. Valve size, figure number or description.

2. Operating conditions (pressure, temperature, flow rate and fluid).

3. Maximum differential (shut-off) pressure.

4. Primary power supply-air or hydraulic-available maximum and minimum

pressure and source.

5. Failure mode (open, closed, as is)

6. Control voltage and enclosure designations (NEMA, etc.).

7. Auxiliary equipment:

a) limit switches,

b) solenoids

c) positioner

d) manual over-ride

8. Valve orientation.

9. Preference for specific manufacturer, if any.

ELECTRIC

1. Valve size, figure number or description.

2. Valve operating conditions (pressure, temperature, flow rate and fluid).

3. Maximum differential (shut-off) pressure.

4. Primary power supply:

a) electric-voltage, phase cycles,

5. Control voltage.

6. Valve stem position.

7. Closing time and frequency.

8. Required construction (NEMA, etc.) or local environment.

9 - Auxiliary equipment:

a) push-button stations,

b) reversing controllers,

c) position indicators,

d) other (i.e., stem covers, etc.),

e) Positioner.

10 . Special requirements (i.e., radiation, seismic, etc).

11. Preference for specific manufacturer, if any.

BY PASSES

IN ACCORDANCE WITH MSS-SP45 GATE (2½ -24")

AND GLOBE (2½ - 24") CLASSES 600-2500

Main Valve

Nominal

Pipe Size

In

2½ e 3

4

5 e 6

8

10

12 e 14

16, 18 e 20

24

By-Pass Nominal Pipe Size

Séries A

(1)

½

½

¾

¾

1

1

1

1

Séries B

(2)

½

1

2

3

4

(1) Series A includes steam service for warming up before the main line is opened, and for

balancing pressures where the lines are of limited volume.

(2) Series B includes steam lines conveying gases or liquids where bypassing may facilitate

the operation of the main valve through balancing the pressure on boton sides of the

disc (or discs).

22

OTHERS:

• SEAL WELDED BODY/BONNET (LIP SEAL)

This construction provides extra assurance against leaks in the body/bonnet joint. A metallic ring is placed between the body and the bonnet and sealed with welding in its whole circumference.

• LIMIT SWITCHES

• LEAK OFF (¼ NPT)

• INTERLOCKS

• FLOOR STANDS

HOW TO SPECIFY AND FIGURE NUMBER

When specifying or ordering DURCON-VICE's Gate, Globe and Check valves, make a full description of the valve(s) and the application including: Quantity, Construction Standard, Figure, Size, Pressure Class, Body and Bonnet materials, internals material (Trim), End connections, Desired actuator and Accessories, Packing, Fluid, Maximum and Operating Pressure,

Maximum and Operating Temperature. Example:

A B C D E F G H

Figure Size Pressure Body/ bonnet Trim End Actuator Additional

Class Material Connections Features/ Acessories

7715 - 12” - 900# - WC9 - UU - BW 80 - RE - VGB/LMA/LMF

Pressure Seal Gate Valves, Flexible wedge, Outside Screw and Yoke (OS&Y), Raising stem, Non-raising handwheel, Size

12”, Pressure Class 900#, Body and bonnet in alloy steel ASTM A217 Gr. WC9, Stellite® sealing surfaces, Stem and Backseat in stainless steel 13% Cr., Butt Weld end connections for SCH 80 piping, Handwheel Actuator with Gear Reducer box, Packing in carbon fiber, Construction according to ANSI/ ASME B16.34, Accessories; by-pass globe valves, size 1” 1500# and Limit

Switches for open and close positions.

[A] Figure Number

This code represents the basic type of desired valve. Use the Figure code indicated in the page of dimensions and weight, for each type of valve, pressure Class and desired wedge feature, Example:

7820 - Gate 1500# Parallel Wedge

7610 - Gate 600# Solid Wedge

7955 - “Y” type Globe 2500#

7785 - Swing Disc Check 900#

[B] Nominal Size

The same Nominal Size of the piping where the valve will be installed (1/2”, … 4”, 6”, 8”, … 20”, etc.)

[C]Pressre Class

The desired pressure Class: 600#, … 2500# for standard Class (ST) or 600# SP, … 2500# SP for special Class (SP).

[D] Body and Bonnet Material

Use the suffix of the body/bonnet material (WCB, WC6, WC9, C12A, CF8M, etc.)

[E] Internal Components Materials (TRIM)

Use API 600 standard. To define the trim code or: below for TRIM

XX

Sealing surfaces in the wedge / disc and in the body seat rings in 13% Cr ; Stem and back-seat in stainless steel 13% Cr.

UU

Sealing surfaces in the wedge / disc and in the body seat ring in Stellite®, Stem and back seat in stainless steel 13% Cr.

XU

Seal surface in the body seat ring in Stellite . Seal surface in the wedge / disc ,

[F] End connections

Use the code of the desired end connections, according to the table below:

FR-

RTJ-

FL-

Flanges

Raise Face. Finishing according to

MSS-SP6

Ring Type Joint

Flat Face

Weld

BW(__) Butt Weld must inform Schedule(SCH)

SW(__) Socket Weld

Others

SPC -

Special (describe)

[G] Actuator

Use the code of the desired operation (manual) or actuator, according to the table below.

Manual

Actuators

MN-

Handle

AE-

AH-

Electric

Hydraulic

Others

SPC -

Special - (describe)

RE-

VI-

VO-

Handwheel and gear reducer

Impact handwheel

Handwheel

AP-

RM-

Pneumatic, double action

Pneumatic, spring return

[H] Additional Features and Accessories

Use the code of the optional or describe the desired special feature(s), according to the table below:

AL-

ALS-

Accessories

Lantern ring

Lantern ring with sealant injector

Accessories

VGE-

VGB-

Equalization globe valve

By-pass globe valve

VGEB-

Equalization and by-pass globe valve

Others

LMA-

Limit switch -valve open

LMF-

SPC-

Limit switch - valve close

Special (describe)

23

(Stellite ® )

SW - ANSI B16.11

BW - ANSI B16.25

The right product for your application.

Automatic Recirculation Valves -

For Centrifugal Pumps Protection

Model NVM, VRM-HPM and NVL

Tri Eccentric Butterfly Valve

Special Valves

Special Valves

VPSEAI 04/09

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