Apollo Conbraco 7K10801 Installation guide

Apollo Conbraco 7K10801 Installation guide
Apollo 7K/77-10X-SV Series Threaded End Ball Valves
With Secure Vent Option
Installation, Operation, & Maintenance Manual
Introduction
This manual presents guidelines for the Installation,
Operation and Maintenance of Apollo two-piece
threaded end ball valves with the secure vent automatic
drain option.
where applicable for application guidance or contact
your distributor or the factory for more detailed
assistance.
Valve should be stored in its original shipping
container until just prior to installation with any
protection means in place and protected from the
environment or any other potentially damaging effects.
Valve should be properly supported and secured before
moving to prevent possible damage to valve, property
or harm to personnel.
WARNING: All installations shall be provided
with pressure relief devices in accordance with the
requirements of the Pressure Equipment Directive
97/23/EC. Proper installation prior to initial
operation is the user’s responsibility. Furthermore
where an additional hazard can occur due to valve
exposure to fire or other unexpected external heat
source, a supplemental pressure relief device shall
be installed to protect against excessive pressure.
This device shall prevent the pressure from rising
more than 21% above the maximum allowable
working pressure.
Limitations
Pre-Installation Inspection
Storage & Protection
 In-line service only, not recommended for end of
line service.
 Valves with the secure vent option are intended for
air service only. It is the user’s responsibility to
determine that the valve is appropriate for the
intended application. Application not to allow
corrosion >.002"/year (.05mm/year).
 The possibility of material deterioration in service
and need for periodic inspections is the
responsibility of the user.
 Mechanical supports are not to be welded or brazed
directly to the valve, however may be fitted to the
associated piping.
 It is the piping system designer’s responsibility to
implement appropriate protection measures to
minimize reaction forces and moments, which
result from supports, attachments, piping, etc.
 Laws of the state must be observed as they apply.
 Some National/Local authorities may require
periodic hydrostatic testing and inspections.
 Only use Conbraco replacement parts.
 On-off service only (not to be used for throttling).
 Valves are primarily intended for industrial use.
 Level of training, experience or ability of users
should be at least that of trained and skilled
maintenance personnel or technicians.
Caution
Inspect the piping system prior to valve installation
whenever possible, to insure that it has been properly
flushed and cleared of construction and fabrication
debris. The seating surfaces in soft seated valves are
particularly susceptible to weld slag and sand blasting
grit. Pipe scale, metal chips and other foreign
materials should be avoided.
Just prior to installation, remove each valve from its
packing. Examine the flow bore for debris. All Apollo
ball valves are shipped in the open position to prevent
damage to the ball surface. Any grit or foreign matter
must be removed. Do not install a damaged valve.
It is also important to check for valve operation
clearances. If necessary, valves can be installed at
angles other than upright or vertical.
Valves with the secure vent option are directional and
must be oriented correctly for proper operation. Each
valve is marked with a flow direction arrow.
Drain port leakage is normal and should be considered.
Any pressure downstream of the valve will be released
from the drain port when the valve is closed. Threaded
drain port connections are a standard feature on the 7K
series.
Proper valve selection is the first step in any successful
installation. Refer to an "Apollo Ball Valve Binder",
I903700, Rev A
Installation
Apollo ball valves are designed to be used with pipe
and fittings threaded to American National Taper Pipe
Thread standards, NPT.
Violating temperature and pressure limits can result in
immediate valve failure where chemical attack or
corrosion generally occurs gradually.
Maintenance
1. Check mating threads for cleanliness and defects.
Correct any issues as necessary.
2. An appropriate thread sealant compound or PTFE
tape is required for make-up of pressure tight NPT
joints. Following thread sealant application, hand
tighten the joint making certain that the flow direction
is correct.
3. To complete the joint, the hex flats nearest the joint
must be used for tightening. Never apply torque
through the valve’s body and retainer joint. Tightening
approximately one turn past hand tight engagement
should be sufficient.
4. Prior to connecting the remaining joint, check for
possible excessive piping loads. Vibrations and
movement of connected piping can cause severe
damage. Connect the remaining joint using the
methods described above if piping supports are found
to be acceptable.
5. Connect any vent piping if applicable.
Problems if they occur most frequently appear
immediately following initial start-up or following a
re- start after a shutdown period. Particular attention
needs to be paid to valves and other critical equipment
during these times. Once the system has stabilized and
is in operation, fewer problems tend to occur.
Operation
Caution: Never back off the packing gland
adjustment screw when the valve is under pressure.
Apollo ball valves are shipped with a hang tag secured
about the valve stem. Although each valve is
thoroughly tested and inspected before it leaves the
factory, a hang tag could be lost or destroyed during
shipment or while in storage. If it is missing or not
legible, contact your distributor or the factory for
assistance before operating valve. WARNING
Provide means to monitor filling valve to prevent
over pressurization and instability.
Valve Adjustments
At some point in the service life of the valve, leakage
may occur. This should be noted in the maintenance
history log of the valve. The stem packing was
adjusted at the factory to provide a leak tight seal when
the valve was new, but compaction can occur within
these seals that may make re-adjustment necessary.
Stem leakage should be stopped as soon as it is
detected. Packing adjustment can be accomplished by
turning the packing gland screw clockwise to the
maximum torque shown in Table 1.
Table 1: Packing Gland Adjustment Screw Torque
Valve Size
(inches)
¼”, 3/8”, 1/2”
3/4”
1”, 1-1/4”
1-1/2”, 2”, 2-1/2”
Torque
(ft-lbs)
12-13
20-22
61-67
61-67
Ball valves are intended to be on-off devices operating
through 90o rotation of the stem. Operation is
clockwise to close. Valves with the secure vent,
automatic drain option, are designed to relieve any
pressure from downstream piping. If downstream
pressure is noted, valve maintenance is required.
Do not over tighten the packing gland adjustment
screw. Over-tightening will result in excessive
operating torque and shorten the packing’s service life.
If stem leakage continues, or operating torque becomes
excessive, de-pressurize the valve and replace the stem
seals.
The most common service failures not related to the
installation and start-up processes are:
Valves with high operating torque not resulting from
stem seal over-tightening or valves which have leakage
by the seats, may have damaged seats or ball surfaces.
These valves should be de-pressurized, disassembled,
and inspected for damage.
* Exceeding the operating temperature or pressure
limits of the valve due to a process upset condition.
* A chemical attack on valve components due to
either misapplication or changes in the service.
I903700, Rev A
Valve Overhaul
As part of planned maintenance or as a result of a
problem that cannot be adjusted away, a valve may
require a complete overhaul. Due to the uncomplicated
design of the Apollo ball valves this can easily be
accomplished.
The first step is to contact your distributor to acquire
an appropriate rebuild kit. These kits typically contain
a complete set of seats, seals, and gaskets. If ball or
stem damage is suspected, it is wise to order these parts
when the seal kit is purchased. Most of these items
will be in stock at the factory. To properly order spare
parts, you will need the valve model number as shown
on the hang tag.
Disassembly
Once the spare parts are on hand, the first step in the
valve disassembly is to isolate the valve from line
pressure. WARNING do not attempt to work on
any valve under pressure, and depending on the
service, valve surface temperature may be hot, use
proper protective gear to protect against burns.
Also provide safe means for uncontrolled release of
fluid.
Using an adjustable wrench, valve lever, or properly
sized open end wrench, rotate the stem until the valve
is in the one half open, one half closed position. Be
careful not to damage the stem. This will allow any
cavity pressure to be released into the pipeline. Place
the valve in the open position after this is done.
Due to the uncomplicated design of Apollo two-piece
ball valves, disassembly and repair can easily be
accomplished through the following steps.
1. Remove the lever nut, lever, and packing gland
screw.
2. Secure the valve body to a heavy work table in
preparation for removal of the retainer. It may be
beneficial to lightly strike the valve body and retainer
joint with a small hammer to help break down the
loctite® retaining compound.
3. Remove the retainer by turning counter-clockwise.
A large pipe wrench will be required to remove the
retainers from valves larger than 3/4”.
4. After removal of the retainer, the ball and remaining
seat can easily be removed from the valve. The valve
must be placed in the closed position for ball removal.
5. Next, remove the stem by pressing it downward into
the body. Remove the stem and stem bearing from the
body.
6. Lastly, remove the stem packing. Take care not to
scratch the packing gland wall when removing the
stem packing. Screw drivers and other sharp tools
should be used with caution.
Inspection
1. Thoroughly clean all the components in preparation
for inspection.
2. Inspect stem packing contact surfaces for scratches
and pits. If either of these is apparent and can be
removed with #120 or finer grit emery cloth, body
replacement will not be necessary. Deep scratches
running down the side of the packing gland or
excessive pitting will necessitate the replacement of the
valve body.
3. Inspect the ball in the same manner, replace the ball
if necessary.
4. Inspect remainder of body interior for pitting or
corrosion and replace if excessive.
5. Inspect all parts for wear due to erosion or abrasion
and replace if excessive.
Reassembly
1. Begin the re-assembly process by cleaning each of
the component parts with a clean towel or cloth.
2. Place the stem bearing on the stem, and insert the
stem into the valve body stem bore. Place the flats on
top of the stem perpendicular to the centerline of the
body.
3. If the application permits, lightly oil the seats with
an oil of the consistency of cooking oil. Place the seat
not containing the o’ring groove into the valve body
seat pocket.
4. Next, insert the ball making certain that the vented
side of the ball is adjacent to the body end seat.
5. The remaining seat, o’ring, spacer, and wavesprings
must be correctly installed into the retainer before the
retainer is installed into the body. See Detail A below.
I903700, Rev A
6. After securing the body, apply a suitable loctite
retaining compound to the retainer threads and
assemble to the valve body. Torque to the value shown
in table 2 below.
Table 2: Body and Retainer Joint Torque
Valve Size
(inches)
1/4”
3/8”
1/2”
3/4”
1”
1-1/4”
1-1/2”
2”
2-1/2”
Torque
(ft-lbs)
13
16
42
63
130
199
282
686
905
7. Insert the stem packing, followed by the packing
gland screw and torque to the valve shown in table 1.
8. Install the hang tag, lever, and nut to complete the
reassembly process.
Final Adjustments
Cycle the valve from open to close several times to
verify free operation. Occasionally, after testing or
initial start up, a minor stem packing leak may occur.
Re-adjust the stem packing torque as necessary.
Hang Tag Information
All two-piece ball valves feature a yellow mylar
hang tag secured about the valve stem. If this tag
is missing or damaged, please contact your
distributor or the factory for a replacement.
MYLAR HANG TAG
7K103SV
BODY: BRZ
STEM: BRZ
BALL: BRZ
SEAT: RPTFE
PACKING: MPTFE
Made In U.S.A.
I903700, Rev A
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement