Operating instructions

SHERWOOD LPG PRODUCTS
Instruction Sheets
Renovation Procedures
Step 1: Disassembly
1. Place the adapter valve in the vise so that
the handwheel is up and the valve outlet
is held flat against one of the vise jaws.
DO NOT OVERTIGHTEN. Overtightening
the vise can distort the valve body,
making it difficult to remove the bonnet
and stem assembly. Should this occur,
the entire valve must be destroyed so it
cannot be reused.
See Figure 1.
2. Use the screwdriver (or #25 Torx driver)
to remove the handwheel screw and
handwheel. With the 1
3
⁄
16
" socket and
wrench, fully loosen the bonnet nut by
turning it in a clockwise direction (bonnet
threads are left-hand) as shown in Figure 2. With the bonnet threads disengaged from the
body, lift the bonnet and stem assembly out of the valve body and discard the entire assembly.
Do not reuse any of the old parts except the handwheel and screw. See Figure 2.
Step 2: Inspection
1. A damaged valve-to-bonnet seat may not allow
a positive seal. Inspect the valve seat where the
bottom of the bonnet nut contacts the valve when
fully tightened. If the seat is nicked, scratched,
worn, or distorted, destroy the entire valve so it
cannot be reused.
2. Inspect the inlet and outlet connections. Destroy the
entire valve if any threaded connection is damaged
or has worn threads. Clean all threads as necessary.
3. Remove the pipe plug from the side of the valve.
Inspect the access port. If the port threads are
damaged or worn, destroy the entire valve so it
cannot be reused. Replace the pipe plug, part
#2426B, if the threads are damaged or worn.
4. On valves fitted with the optional excess-flow valve
at the inlet of the valve body, press the mechanism
several times to make sure the spring returns the
valve to the open position. If there is any binding,
if the spring post is bent, or if the valve disk is
damaged in any way, use a
3
⁄4" socket wrench to
remove the excess-flow valve. Destroy the part.
Replace with kit #2341-110-KIT.
Step 3: Re-Assembly
1. Insert a new #2341-9 gasket into the valve-to-bonnet seat.
2. Insert the new bonnet and stem assembly into the valve body. By hand, screw the bonnet
assembly counterclockwise into the valve. Thread sealant is not necessary since the bonnet
seat provides a seal. Secure the valve in a vise as described earlier. Use an accurate torque
wrench to tighten the bonnet nut between 45 to 50 foot-pounds of torque. Do not overtighten.
3. Replace the handwheel and handwheel screw. Tighten the screw between 20 to 25 inch-
pounds of torque.
4. Apply pipe dope suitable for use with LP gas on the male threads of the pipe plug. Install into
the side of the valve and tighten.
Step 4: Testing
1. Turn the handwheel through its full range to verify easy operation. If there is any binding
or grinding, destroy the entire valve so it cannot be reused.
2. Install the valve onto an empty LP gas tank fitted with a
3
⁄4" NGT female connection. Turn
the handwheel fully clockwise to close (frontseat) the valve. Pressurize the tank with air to
approximately 150 psig.
3. Screw an appropriate (
1
⁄
2
"
or
3
⁄4") NPT pipe plug one to
three turns into the outlet of
the valve. Apply a commercial
leak-test solution around the
outlet plug and check for leaks.
A leak here indicates a leaking
lower (front-seating) seal. If a
leak was found, evacuate the
cylinder according to NFPA
Pamphlet #58 and NPGA
Installation and Service Guide
Book #4003. Remove and
destroy the entire valve so it cannot be reused.
Install a new valve.
4. Tighten the outlet pipe plug at 15 to 25 foot-pounds of torque. Open the valve (turn
counterclockwise). Use the leak-test solution to check for leaks around the bonnet nut,
stem, and gauge port.
5. If any leaks are found, close the valve (turn clockwise). Remove the outlet plug. Slowly open
the valve to allow the air to escape. When the venting stops, remove the valve from the tank.
Do not attempt to repair the leak. Destroy the entire valve so it cannot be reused.
6. If no leaks were found, close the valve (turn clockwise). Remove the outlet plug. Open the
valve to allow the air to escape. When the venting stops, remove the valve from the tank.
The valve may now
be placed in service.
Warn Your Customer
t Leaking gas can cause fires or explosions
t If you smell gas
- Immediately call your gas supplier from a neighbor’s phone
- If you can’t reach your gas supplier, call the Fire Department
- Do not touch electrical switches or telephones
- Do not light appliances
* Must be approved for use on brass and with LP gas.
SAFETY INSTRUCTIONS
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Figure 1
Figure 1
Figure 3
BACK-SEATING
SEAL
#2341-3
LOWER STEM
ASSEMBLY
#2341-40
Figure 3
Back-Seat Seal
#2341-3
Lower Stem Assembly
#2341-40
BONN
#2
3
BODY
G
#2
3
Figure 2
Body Gasket
#2341-9
Bonnet Assembly
#2341-20
Pipe Plug
Tools Required
R Medium slotted screwdriver (or #25 Torx
®
screwdriver)
R A 1
3
⁄16" -deep socket and wrench
R Bench vise with soft-faced jaws
R
Torque wrench, 0–100 foot-pounds
R
Petroleum jelly lubricant
R
Toothbrush
R Alcohol
R Fine wire brush
R Empty LP gas tank with a
3
⁄4" NGT female
connection
R
Commercial leak-test solution*
R
Pipe dope suitable for LP gas
NOTICE:
All Sherwood products must be used in strict compliance with the requirements
and provisions of National Fire Protection Association Pamphlets #54 and #58,
DOT, ANSI, and all applicable federal, state, provincial, and local standards, codes, regulations, and
laws. It is the responsibility of the sellers, installation and maintenance personnel, and end users to
remain knowledgeable of and in compliance with all standards, codes, regulations, and laws.
All Safe, Inc. 1-866-958-3473