Operating instructions
Safety Relief
Device
Handwheel
Valve Outlet
Bonnet and Handwheel Inspection
Before evacuating the tank, make sure the bonnet assembly is in good working order. There must be
at least 35 psig of cylinder pressure to perform this test. Plug the valve outlet with a POL plug. Open
the outlet valve halfway and thoroughly check the bonnet nut and stem for leaks using a commercial
leak-test solution.
Turn the handwheel clockwise until the bonnet just bottoms on the seat. Tighten the handwheel
approximately one tenth of a turn further. Carefully remove the outlet plug.
Thoroughly check the outlet for leaks using a commercial leak-test solution. Remove any excess liquid
when complete. If any leak is found during either of the above tests, the bonnet assembly must also be
replaced. See Sherwood Instruction Sheet R-3250-8LH.
SHERWOOD LPG PRODUCTS
Instruction Sheets
Tools Required
❏ A large adjustable wrench or
1
3
⁄8" open-end wrench
❏ Torque wrench, 0–50 foot-pounds
❏ Socket wrench
❏ Open-end crowfoot adapter, 1
1
⁄8"
❏ Commercial leak-test solution*
❏ Petroleum jelly lubricant
❏ Toothbrush and alcohol
❏ Small wooden dowel
❏ Small, fine wire brush
SAFETY INSTRUCTIONS
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Step 2: Inspection
1. Inspect the internal valve shoulder where the O-ring seats. If the seat is nicked, scratched,
or distorted, replace the entire valve. Destroy the old valve so it cannot be reused.
2. Inspect all threaded connections. Replace the entire valve if any threaded connection is
damaged or has worn threads. Destroy the old valve so it cannot be reused.
3. Using a fine wire brush, clean the old threadlocking residue from the fine female threads where
the ACME connector screws into the valve. Blow the valve clean with compressed air. Clean all
other threads as necessary.
4. Inspect the poppet guide for wear or nicks around the center guide hole. If any are present,
contact Sherwood for a replacement. The poppet guide may be reused if it is in good condition.
5. Inspect the vent opening on the side of the valve. If the orifice sealing surface is corroded,
clean it with a toothbrush and alcohol. If the orifice sealing surface is gouged, dented, pitted,
or scratched, replace the entire valve. Destroy the old valve so it cannot be reused.
6. Remove and discard the rain cap on the safety relief device. Inspect the safety-relief spring
for corrosion. If anything but light surface corrosion is present on the spring, replace the entire
valve. Destroy the old valve so it cannot be reused.
7. Inspect the safety relief device. If its openings are clogged with foreign matter or if it shows any
sign of tampering or is dented, bent, or damaged in any way, replace the entire valve. Destroy
the old valve so it cannot be reused. Never attempt to repair or clean a safety relief device.
8. Inspect the valve cap. If it is cracked or broken, replace with a new cap.
Step 3: Re-Assembly
1. Lightly lubricate a new #623-12 O-ring with petroleum jelly and install it into the valve at the
O-ring seat.
2. Make sure the poppet guide is in the correct position inside the valve. Install the new poppet
spring onto the new poppet stem. Guide the poppet stem through the guide hole in the middle
of the poppet guide.
3. Push the poppet and spring all the way down and use a pencil or wooden dowel to hold it down.
Slide the new ACME connector over the dowel and turn clockwise until the fine threads engage.
See Figure 2.
4. Continue screwing the ACME connector until only two or three of the fine male threads remain
visible. Place two or three drops of omniFIT
®
1570 or Loctite
®
272 on the threads. NOTE: Loctite
272 will begin to cure within seconds of being confined within brass threads. If this happens
before the following tightening procedure is completed, the sections must be separated,
cleaned, and reassembled.
5. Using the torque wrench and 1
1
⁄8" crowfoot adapter, tighten the ACME connector with 30 to 40
foot-pounds of torque. Do not overtighten.
6. Push the poppet down several times to make sure it moves without binding.
7. Install the new liquid-level stem into the side of the valve body and tighten finger tight.
8. Install the new filler gasket into the inlet of the new ACME connector.
Step 4: Testing
1. Pressurize the cylinder with LP gas at 50 to 150 psig. Using the commercial leak-test solution,
check for leaks where the ACME connector screws into the valve body.
2. Keep your body away from the valve inlet. Carefully place two or three drops of commercial
leak-test solution around the poppet seat and inspect for leaks. When complete, use a clean
cloth or paper towel to remove the excess liquid. Do not use a soap-and-water solution for
this test — it could corrode the internal parts.
3. If any leaks are found, evacuate the tank 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. If no leaks were found, the valve may be placed in service. Make sure the valve cap is in place
and tightened.
Warn Your Customer
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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.
Note: Torque wrench, socket wrench, and crowfoot adapter should all have the same drive size.
omniFIT is a registered trademark of the Henkel Adhesives Corporation.
Loctite is a registered trademark of the Loctite Corporation.
Filler-Section Replacement Procedures
Step 1: Disassembly
1. Remove all traces of LP gas from the cylinder using the procedures specified in National Fire
Protection Association Pamphlet #58 and National Propane Gas Association Installation And
Service Guide Book #4003.
2. Clean the valve with clean compressed air so dirt does not enter the valve’s interior.
3. Remove the liquid-level stem valve located on the side of the main valve body. Destroy the part
so it cannot be reused.
4. Prevent the valve from turning while removing the ACME connector by holding it steady with an
adjustable wrench (or 1
3
⁄8" open-end wrench) applied at the valve’s wrench flats. Use the socket
wrench and 1
1
⁄8" open-end crowfoot adapter on the flats of the threaded ACME connector.
Remove (turn counterclockwise) the ACME threaded connector. Destroy the connector so it
cannot be reused.
5. Remove the poppet and poppet spring. Destroy the parts so they cannot be reused.
6. Remove the O-ring that seals the ACME connector to the valve body. Destroy the O-ring so it
cannot be reused.
Figure 1
Figure 2
Filler Gasket #697-2
ACME Connector #623-2
Poppet #2035A-10
Poppet Gauge
Poppet Spring #19-1855-12
Body O-Ring #623-12
Liquid-Level Stem #1931-24A
Rain Cap #UT12X
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