Midland A-541 Modified Bottom Outlet Plug Valve IOM Manual
Below you will find brief information for Bottom Outlet Plug Valve A-541 A-541. This manual covers installation, operation, and maintenance procedures for the A-541 Series Modified Bottom Outlet Plug Valves, designed for containing vegetable oil, biodiesel, and asphalt in tank cars. Features include a triple-seal design, spring-loaded plug for safety, and a two-piece construction for easier installation.
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Part Number: A-541, Rev. 0
Issue Date: October 29, 2015
Supersedes: N/A
Modified Bottom Outlet Plug Valve
A-541 Series
Installation, Operation and Maintenance (IOM) Manual
7733 Gross Point Road • Skokie, IL 60077 • (847) 677-0333 • Fax (847) 677-0138 • www.midlandmfg.com
P/N: A-541, Rev. 0
Page 2 of 26
Table of Contents
1.0
Introduction .......................................................................................................................... 3
1.1
Features ........................................................................................................................... 3
1.2
Technical Specifications .................................................................................................. 5
1.3
Component Identification and Part Listings ..................................................................... 7
1.4
Pre-Installation Regulations/Requirements .................................................................... 11
2.0
Valve Installation ................................................................................................................ 13
2.1
Preliminary Considerations ............................................................................................ 13
2.2
Installation Procedure .................................................................................................... 13
2.3
Inspection Procedure ..................................................................................................... 17
3.0
Valve-Testing Procedure ................................................................................................... 18
3.1
Testing After Installation ................................................................................................ 18
4.0
Operating Procedure .......................................................................................................... 19
4.1
Opening the Valve ......................................................................................................... 19
4.2
Closing the Valve ........................................................................................................... 19
5.0
Maintenance ...................................................................................................................... 20
5.1
Prior to Maintenance Tasks Performed ......................................................................... 20
5.2
Routine Maintenance ..................................................................................................... 20
5.3
Leakage Through the Valve ........................................................................................... 21
5.4
Shaft Packing-Gland Leakage ....................................................................................... 23
6.0
Warranty ............................................................................................................................ 25
P/N: A-541, Rev. 0
Page 3 of 26
1.0 Introduction
The A-541 Series Modified Bottom Outlet Plug Valves are cavity-free, corrosion-resistant devices that have been designed for the containment of vegetable oil, biodiesel and asphalt in tank cars requiring superior product containment. The valve style was modified to accommodate mounting requirements by splitting the body in half for a two-piece design. This enables the valve to be internal to the tank and attached to the existing mounting studs.
•
High-quality steel construction with an optional integrated steam jacket
•
Meets Level A protection per AAR
•
Triple-seal design for exceptional sealing capabilities
•
Direct replacement requiring no modification to existing mounting or coil arrangement on railcar
1.1
Features
Direct Replacement for ACF 1576
1
•
No modification to existing mounting or coil arrangement on car
•
Meets Level A protection per AAR
Superior Construction & Features
2
•
304 stainless-steel wetted parts
•
Optional integrated steam jacket
•
Two-piece construction enables internal installation to existing mounting studs
Configuration Options
3
1
•
Integrated 304 stainless-steel cap and chain
•
Standard and specialty elastomers available
Optimized for Vegetable Oil, Biodiesel and
Asphalt Service
2
•
DOT 111A100W1 cars
•
AAR 211A100W1 cars
3
Safety & Performance
•
Spring-loaded plug ensures valve remains closed in the event of an accident
Figure 1-1 A-541 Sectional View
•
Triple-seal design on plug provides exceptional redundant sealing
•
Self-cleaning, cavity-free design prevents entrapment or isolation of media inside valve body
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1.1.1 Design Enhancements
The existing A-549 plug-style valve was modified to accommodate mounting requirements and to split the body in half for a two-piece design. This enables the valve to be internal to the tank and attached to the existing mounting studs.
•
New two-piece bottom outlet valve
•
Modified A-549
•
Current A-549 cam mechanism
•
New body and modified outlet
•
Optional outlet attachments
•
0.44” thickness on saddle must be controlled within 0.030” TIR (±0.015”) for cam mechanism to work properly
•
Meets Level A protection
•
Install top portion inside tank first, then install bottom outlet and connect the cam mechanism
Figure 1-2 Valve Transverse Section
1.2
Technical Specifications
1.2.1 Bottom Outlet Plug Valve
P/N: A-541, Rev. 0
Page 5 of 26
Figure 1-3 Valve Dimensions [Longitudinal Section]
Figure 1-4 Valve Dimensions [Bottom View]
1.2.2 Shaft Extension
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Figure 1-5 Shaft Extension Dimensions [Section A-A]
Figure 1-6 Shaft Extension Dimensions [Section B-B]
1.3
Component Identification and Part Listings
P/N: A-541, Rev. 0
Page 7 of 26
Spring-loaded plug is designed to prevent the valve from opening during an incident
ACF-2-G Saddle (optional)
Figure 1-7 Valve Exploded View
26
27
28
29
31
32
33
34
35
36
37
38
39
40
41
42
44
45
46
47
Item
1
2
3
8
9
10
11
12
13
4
5
6
14
15
16
17
18
19
20
21
22
23
24
25
1.3.1 Bottom Outlet Plug Valve
4
1
1
1
1
4
4
4
4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Qty. Part Name
1
1
1
Top Guide
Shaft
Retainer Assembly
Body
Spring
Retainer Cover Assembly
Packing Flange
Name Plate
Seat O-ring
Bore O-ring
Shaft O-ring
Bushing O-ring
Wiper Ring
Cam Lever
Cam
Cam Bolt
Retainer Ring
Shaft Bushing
Packing Bushing
Packing Set
Packing Spring
Inner Ring
Retainer Ring
Packing Bolt
Packing LKW
Retainer Bolt
Retainer LKW
Cam-Stem Nut
Cam-Stem Pin
Cam Pin
Base
Base Bolt
1
1
1
3
1
3
1
1
4
1
3
Base LKW
Body O-ring
Nut
Pin
Cap Assembly
Eyebolt, Nut, LKW
Stud
Base O-Ring
Lock Washer
Stem Jacket
Bolt
8 oz. Heat-Transfer Cement
2
1
2
Washer
Nut
Drive Screw
Figure 1-8 Valve Components [Longitudinal]
Figure 1-9 Valve Components [Bottom View]
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P/N: A-541, Rev. 0
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Figure 1-10 Valve Components [Transverse]
1.3.2 Shaft Extension
7
8
9
4
5
6
Item
1
2
3
10
11
12
13
1
1
1
2
1
1
1
1
1
1
Qty. Part Name
1
1
1
Bracket Assembly
Shaft Coupling
Shaft Extension
Packing Washer
Bearing
Retainer Ring
Handle
Pin
U-Bolt and Nuts
Latch with Pin
Swing Pin
Placard (Closed)
Placard (Open)
NOTES:
* Items 10 and 11 are part of welded bracket assembly (item 1).
** Handle (item 7) and pin (item 8) are part of the valve assembly.
Figure 1-11 Shaft Extension Components [Section A-A]
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Figure 1-12 Shaft Extension Components [Section B-B]
Figure 1-13 Handle in Open Position
[Section C-C]
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Page 11 of 26
1.4
Pre-Installation Regulations/Requirements
1.4.1 Regulations
Midland bottom outlet plug valves are used in contact with a variety of products, many of which are hazardous materials. The acceptance and transportation of products are regulated by the DOT and AAR in the United States and by CTC and Transport Canada in Canada. Regulations of other governmental bodies must be complied with for stationary and mobile applications. All personnel should be familiar with and follow these regulations. Nothing in these instructions is intended to conflict with or supersede these regulations. The information in this document was gathered from knowledgeable sources, but Midland
Manufacturing Corporation makes no representations or guarantees about its accuracy or completeness and assumes no liability for this information.
Specifications are subject to change without notice.
1.4.2 Safety Precautions
Midland valves are used in connection with a variety of products, many of which are hazardous materials and could cause serious injury or damage.
This valve should only be installed, operated and maintained by qualified personnel.
Read all of these instructions carefully before proceeding.
CAUTION
CAUTION: Toxic Hazard. Always use extreme caution and proper equipment when involved with hazardous materials. To avoid exposure to toxic or hazardous materials, make sure the tank car is empty and clean, and that the work area is free of hazardous chemicals before removing or installing any valve.
WARNING
WARNING: When assembling or disassembling the valve, DO NOT position oneself directly in front of the spring and retainer assembly. Instead, position oneself to the side, away from the valve. Unexpected component failure – top guide spring may cause a sudden energy release that can discharge component parts a short distance in an uncontrolled manner. Personal injury may be a result.
P/N: A-541, Rev. 0
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1.4.3 Precautions for Mounted-Valve Repair
When performing maintenance on a bottom outlet plug valve that is mounted on a railcar, observe the following precautions:
•
Wear protective clothing and equipment suitable for withstanding the materials to which you may be exposed
•
Position yourself on the upwind side of the valve when possible
•
Work in a well-ventilated area
•
Work with a partner who can help you in the event of an emergency
Follow approved safety precautions for hazardous or toxic materials
•
•
Obtain MSDS sheets for all the materials used with the associated valve
1.4.4 Required Tools
Before arriving at the installation site obtain the required tools and supplies prior to performing the procedures indicated in this guide.
Recommended Wrenches
SAE Component
Hex Nuts
Torque (ft-lb)
150
Item #
34
Bolts & Lock Washers
Table 1-1 Required Tools with Torque Specifications
Other Tools and Supplies
Screwdrivers Lint-free Cloth
30 32
2-Ton Two-Arm Puller
Silicone Grease (or equivalent lubrication)
Torque Wrenches (0 – 300 ft-lb)
Table 1-2 Additional Recommended Tools and Supplies
Emery Paper (400-grit, cut in 1" strips)
Wire Brush
P/N: A-541, Rev. 0
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2.0 Valve Installation
2.1
Preliminary Considerations
2.1.1 New valves are tested, adjusted and sealed at Midland. If a new valve has been left in its original packaging, is undamaged and is not more than six (6) months old, it may be installed on a tank car without retesting or recalibration.
2.1.2 Prior to installation, ensure that the valve remains clean and the gasket-sealing surfaces are not damaged.
2.2
Installation Procedure
CAUTION
CAUTION:
Be sure the car is empty and clean, and that the work area is free of hazardous chemicals that may have been in the car, before removing a valve or installing a new one.
2.2.1 Thoroughly clean the sealing surfaces on the mounting saddle. Be sure there are no nicks, burrs, grit, paint, coatings or any other residue on this surface. Saddle-sealing surfaces should be flat
within 0.030” TIR.
Figure 2-1 Mounting-Saddle Sealing Surfaces
2.2.2 Install upper section of valve inside the tank car.
Figure 2-2 Upper Section of Valve
P/N: A-541, Rev. 0
Page 14 of 26
2.2.3 The upper section of the valve weighs approximately 40 lb, depending upon the type, so it may be desirable to have mechanical assistance or additional manpower to help.
2.2.3.1 Make sure valve body O-ring (item 33) is in groove. If necessary, slightly stretch O-ring and install it in groove. Stretching helps keeping O-ring in groove and prevents it from falling out of the groove.
2.2.3.2 Lower the upper section of valve onto the saddle.
2.2.3.3 Align valve body upper flange with 1” threaded holes in saddle and install three (3) studs
(item 38), lock washers (item 40) and hex nuts (item 34). Gradually apply torque in crosspattern in 30 ft-lb increments until 150 ft-lb; do NOT over-torque above 200 ft-lb.
2.2.3.4 Valve body should make metal-to-metal contact with saddle.
2.2.4 Install the lower section of the valve outside the tank car.
Figure 2-3 Lower Section of Valve
2.2.4.1 Make sure base O-ring (item 39) is in groove and inner ring (item 23) is in base flange.
2.2.5 Reconnect the cam (item 16) with the cam lever (item 15) by reinserting the cam bolt (item 17). It may be necessary to reorient the cam lever by rotating it about its vertical axis. Put a screwdriver in the 1/2” hole in the cam lever or use a small adjustable wrench to turn the cam lever.
2.2.5.1 The cam lever must be oriented properly with the open section between the two halves of the cam facing in the same direction as the recess in the cam lever. This will permit the cam lever to completely close without hitting the cam when the valve is closed. If you cannot rotate the shaft to draw the upper and lower halves of the valve together with the valve closed, the cam lever (item 15) has probably been oriented 180° out of position. If this is the case, reorient the cam lever.
P/N: A-541, Rev. 0
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2.2.5.2 Screw on the cam stem nut (item 27) hand-tight until the slots of the nut are aligned with the cotter pin hole. The cam bolt is a pivot, so it does not need to be wrenched tightly, just
“snugged up.” Insert the cotter pin and spread both legs out and back around the nut. If it is hard to keep the nut and cam bolt in place to insert the cotter pin, after properly positioning these parts, put tension on them to keep them from moving by closing the valve.
Figure 2-4 Cam Assembly/Position of Cam as Seen from the Stem Shaft
2.2.6 Rotate the valve shaft approximately 180° to draw up the lower half of the valve. It is important that the valve handle is oriented so that when the upper half is bolted to the lower half, the handle will fit into the bracket that locks it in the closed position.
2.2.7 Align the holes in the base flange with 3/8” threaded holes in the saddle. Make sure stem end is perpendicular to longitudinal axis of the tank car.
2.2.7.1 Install bolts and lock washers (item 32). Gradually apply torque in cross-pattern to 30 ft-lb.
2.2.7.2 The base flange should make metal-to-metal contact with the saddle.
2.2.8 Install shaft extension.
Figure 2-6 Valve and Shaft Extension Installed
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2.2.9 The stenciling on the car shows the open and closed positions of the valve handle. Pin the handle in the closed position, remove the valve cap and check that the cam is in the low position to ensure that the valve is closed. Open and close the valve a few times to be sure it moves freely and check that the valve handle fits into both the open and closed positions.
Figure 2-7 Verify Handle Functionality
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2.3
Inspection Procedure
NOTICE
NOTICE: Repair work is limited to cleaning and polishing. See Paragraph A3.11.2 of the Tank-Car Specifications.
WARNING
WARNING: Machining Not Allowed. Machining, grinding, welding or other alterations to the valve seat or stem seat is not allowed per AAR M1002, Paragraph
A3.11.2 of the Tank-Car Specifications.
2.3.1 Special Inspection Considerations
2.3.1.1 Previous procedures may not cover all conditions encountered in the field. Therefore, it is the responsibility of the repair agency to obtain approval from Midland for inspection, evaluation, repair and maintenance procedures not covered herein.
2.3.1.2 Facilities performing recommended dye-penetration and magnetic-particle testing must carry out such testing according to a qualified procedure conducted by certified trained personnel.
2.3.1.3 Evaluation of critical-component metal surfaces of the valves after cleaning, inspection and specialized testing performed by agencies other than the repair facility are the responsibility of the repair facility.
2.3.1.4 Where numerical tolerances cannot be provided, the disposition of the internal integrity and surface quality of parts is under the jurisdiction of the repair facility and dependent on its experience and judgment.
P/N: A-541, Rev. 0
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3.0 Valve-Testing Procedure
If your company has an approved test procedure, follow the company-approved testing procedures. If your company does not have testing procedures, these procedures provide essential guidelines in regards to pressure testing.
3.1
Testing After Installation
3.1.1 With the valve closed and the bottom cap in-place, pressurize the car to 30-80 psi to check for leaks between the flange/saddle and the upper flange of the valve.
3.1.2 Slightly back off the cap or the 2” pipe plug to see if any air was trapped. If air escapes, this would indicate there was a leak in the orifice area of the valve.
3.1.3 Tighten the bottom cap or pipe plug and open the valve. Inspect for leaks between the valve flange connection, between the upper and lower halves of the valves, the valve and valve cap and plug, and finally the packing gland on the side of the valve handle.
3.1.4 It may be necessary to loosen the valve cap slightly to relieve trapped liquid in order to fully close the valve since the valve cannot be closed when the bottom outlet leg is full of an incompressible liquid.
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4.0 Operating Procedure
4.1
Opening the Valve
4.1.1 Conform with all applicable TC, AAR and DOT regulations (Parts 173.31, 174.67, Pamphlet 34, etc.)
CAUTION
CAUTION: When loading or unloading, the vacuum relief valve’s proper orientation must be verified, and the vent valve or manway cover opened to avoid either compressing air in loading, or drawing a vacuum when unloading.
4.1.2 Be sure that the valve handle is in the closed position, as shown by the car’s stenciling. As an added precaution, loosen the 2” pipe plug in the valve cap and look for any accumulation of product or indication that the valve is leaking or was improperly installed, to ensure that the valve is actually open.
4.1.3 If there are no adverse indications, proceed to hook up the loading or unloading lines, unscrewing the 4” outlet cap (if applicable) or the 2” pipe plug.
4.1.4 Rotate the valve handle from the closed to the open position. Approximately, 25 ft-lb of force at the handle end is required to open this valve against a 25-psig tank pressure.
CAUTION
CAUTION: Do not use an extension or cheater on the valve handle. If it does not move freely, report this to the tank-car supervisor. The tank may be pressurized, contain solidified product or the valve may be jammed.
4.1.5 For unloading, the valve handle must be secured in the open position. If it is not properly pinned open in the bracket, the handle will automatically swing toward the closed position.
4.2
Closing the Valve
CAUTION
CAUTION: Do not use an extension or cheater on the valve handle. If it does not move freely, report this to the tank-car supervisor. The outlet may be filled with trapped incompressible liquid. Release liquid pressure prior to closing the valve.
4.2.1 Remove the pin from the bracket that keeps the handle in the open position. Rotate the handle upwards to the bracket on the closed side. The handle must then be secured in the closed position with a pin and swivel that has a slot for a car seal, or by a lock, to prevent unauthorized opening later.
4.2.2 Disconnect the product line and wash out the lower valve chamber with a compatible cleaning material. Clean off the threads and flat-face surface of the valve. Also, clean off the threads and gasket inside the outlet cap.
4.2.3 Install and tighten the outlet cap using a wrench with a 36” minimum-length handle [as required by DOT 173.3(b)].
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5.0 Maintenance
NOTICE
NOTICE
: It is essential to establish a periodic retesting and preventive maintenance program for bottom outlet valves. The DOT and AAR have set forth a retesting interval that should be considered the maximum length of time between tests. If your company’s experience indicates that a shorter interval is advisable, a program with more frequent retesting should be implemented.
NOTICE: It is an AAR requirement (refer to D4.04) that new O-rings be installed when a valve is retested.
5.1
Prior to Maintenance Tasks Performed
5.1.1 Retesting of Valves in Storage
5.1.1.1 Midland valves are factory set and sealed. If they have been left in their original shipping containers, are undamaged and are no more than six (6) months old, they may be installed without being retested
5.1.2 Required Tools
5.1.2.1 Obtain the required tools and supplies before attempting maintenance procedures. Table 1-
2 outlines suggested tools that may be required.
5.2
Routine Maintenance
CAUTION: Under no circumstances should the valve be operated during maintenance unless the tank car is empty and the valve is free of product.
CAUTION
5.2.1 Verify that the four (4) 5/8” shear bolts (item 32) have not loosened. The split-lock washers must be flat.
5.2.2 Inspect for evidence of leakage along the external flange surfaces and in the shaft packing-gland area.
5.2.3 Check the threads and gasket of the outlet cap to verify that they are in good condition.
5.2.4 Inspect the threads and the flat surface of the valve that seals against the outlet cap gasket. They should be free of solidified product, nicks or other impediments to a tight seal.
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5.3
Leakage Through the Valve
The most likely cause for leakage through the valve is deteriorated O-rings. The procedure for replacing
O-rings in the gasket retainer (item 3) is as follows.
5.3.1 Ensure there is no product and pressure in the car.
5.3.2 Open the valve by rotating the handle to the bracket on the open side and pin it in the open position.
5.3.3 Carefully loosen the outlet cap or pipe plug to verify that there is not pressure or product present.
5.3.4 Close the valve by rotating the handle into the closed bracket and pin it in place.
5.3.5 Remove the outlet cap.
5.3.6 With needle-nose pliers, reach in through the discharge port and take out the stem pin (item 28).
If the stem pin is not easy to reach, the cam bolt can be rotated when the load is taken off it by partially opening the valve. If you still cannot take out the stem pin, go to Step 5.4.9 for better access. Remove the stem pin and then follow Steps 5.4.7 and 5.4.8.
5.3.7 After removing the stem pin, unscrew the slotted nut (item 27).
5.3.8 Pull the cam bolt (item 17) that holds the cam and cam lever together. If you want to take off the valve handle for ease in handling the valve, note the orientation of the valve handle. Mark the top or bottom, since the handle is not symmetrical or reversible. Remove the handle pin and the handle.
5.3.9 Remove the four (4) 5/8” shear bolts (item 32). Take off the lower half of the valve and place it on a clean surface.
5.3.10 To remove the O-rings from the gasket retainer, you can take the upper half of the valve off the car. Or, it may be easier to remove the gasket retainer from inside the car, assuming the car is safe to enter without demounting the valve. If the car is safe to enter and you prefer to enter the car to remove the O-rings from the gasket retainer, proceed to Step 5.4.11.
5.3.11 To remove the upper-half of the valve, unscrew the eight (8) 3/4” socket-head cap screws. The upper half of the valve can now be taken off the car and placed on a clean surface.
5.3.12 Remove the retainer ring (item 24) by using a small screwdriver to peel it off, beginning at the cutaway section of the ring. Sincere there is a compressed spring (item 5) below the top guide
(item 1), push down firmly on the top guide with sufficient force to keep it in position as the retainer ring is peeled out of its groove.
CAUTION: Do not permit the top guide to fly up. About 50 ft-lb of force is necessary to restrain the spring.
CAUTION
5.3.13 Pull out the gasket retainer. Inspect the outside surface of the O-rings for any cracks, nicks, abnormal swelling or surface discontinuities.
5.3.14 If the O-rings need to be replaced, carefully take them out of the grooves with the rounded-end of a 6” scale, a small screwdriver or other blunt-ended tool.
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CAUTION: Do not scratch the O-ring groove, as a scratch could cause a leak path around the O-ring.
CAUTION
5.3.15 O-rings (items 10 and 11) are not interchangeable. The upper O-ring (item 10) is much harder (90 durometer) and less elastic than the lower one (item 11). Use only the proper O-ring for each groove. Clean out the grooves. Lubricate the replacement O-rings with an appropriate grease in order to ease installation. Be sure the O-rings are replaced without twisting.
5.3.16 While the gasket retainer is out of the valve, try rotating the cam lever. It should be free to move.
If it is not, flush out the cavity. If it still sticks, take the four (4) hex-head bolts (item 26) out and see if the pin (item 35) is bent. The pin should be straight and the retainer cover (item 6) should be free of burrs or scores.
5.3.17 Also, carefully inspect the 45° tapered valve seat and the cylindrical surface of the valve orifice or bore. The O-rings seal on both surfaces, so any nicks, scratches, product deposits or other imperfections will permit pressure to pass around the O-ring seal. Running your fingernail over these surfaces should be adequate to sense any imperfections.
5.3.18 Reassemble the valve following the above steps in reverse. Install the valve following the installation instructions, including testing.
5.4
Shaft Packing-Gland Leakage
NOTICE
NOTICE: It is necessary to remove the lower half of the valve to repack the packing gland. Follow the procedure in Section 5.4 Leakage Through the Valve for steps
5.4.1 through 5.4.9.
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Figure 5-1 Valve-Component Maintenance [Sectional View]
5.4.1 Note the orientation of the valve handle. Mark the top or bottom side, since the handle is not symmetrical or reversible.
5.4.2 Tap out the handle pin (item 30) and remove the handle.
5.4.3 Unscrew the packing-gland bolts.
CAUTION
CAUTION: In many of the older valves a compressed coil spring (item 25) is beneath the square packing flange (item 9). Newer valves have a wave spring and chevron V-ring packing in place of a coil spring and a one-piece tubular-shaped
Teflon
®
packing.
5.4.4 Remove the square packing flange and the coil spring, if present.
5.4.5 Remove the retainer ring (item 18) from the packing bushing (item 20) groove and leave it on the hex surface of the shaft (item 2).
5.4.6 Use the shaft to press the packing bushing, Teflon
®
(item 31).
packing and washer out of the valve base
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5.4.7 If changing the packing from the old-style, one-piece Teflon
®
to the chevron V-rings, it will be necessary to insert a chamfer, or tapered lead-in, about 1/8” long by 15 degrees, in the side hole in the base (item 31). This is done with a burr knife or a small rat-tail file. This is necessary to ensure that the outside edges of the chevron V-rings do not get scraped by the sharp edge of the hole.
5.4.8 When renewing the O-rings and/or the Teflon
® facilitate the reassembly.
packing, use an ample amount of grease to
5.4.9 Replace the parts in reverse order. Then follow the previously described instructions in Section
2.0 Valve Installation.
5.4.10 After the reconnection of the lower section of the valve with the upper section, test it in accordance with Section 3.0 Valve-Testing Procedure.
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6.0 Warranty
Midland Manufacturing Corp. warrants the products of its own manufacture to be free of defects in material and workmanship for a period of one (1) year from the date of invoice. Furnished materials and accessories purchased from other manufacturers are warranted only by and to the extent of those manufacturers’ warranties, if any.
MIDLAND MAKES NO WARRANTY OF ANY KIND WHATSOEVER, EXPRESS OR IMPLIED, OTHER
THAN AS SPECIFICALLY STATED HERE. MIDLAND MAKES NO WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR USE.
Midland’s obligation under this warranty is strictly limited, at its option, to 1) repair or replacement at its factory of a like quantity of product: 2) refunding to purchaser money paid to Midland for its product: or 3) issuance of written authorization for the Purchaser to repair or replace, at costs comparable to Midland’s normal manufacturing costs those parts proven defective, provided that Purchaser has given to Midland immediate notice upon discovery of such defect. Merchandise claimed to be defective shall not be returned without first obtaining Midland’s written consent. The undertaking of repair or replacement by the
Purchaser, or its agents, without Midland’s written consent, shall void Midland’s warranty and relieve
Midland of all responsibility. Under no circumstances shall Midland be liable for any direct, incidental, consequential or other damages of any kind in connection with the installation, operation, maintenance, repair, inspection or other use of any product purchased from it.
© Copyright 2014, OPW. Printed in USA.
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Key features
- Triple-seal design
- High-quality steel construction
- Optional integrated steam jacket
- Meets Level A protection per AAR
- Direct replacement