Squibb-Taylor A1596R Owner's manual

Installation, Operation, Maintenance Disassembly and
Assembly Instructions for Model A1596R Liquid
Withdrawal Valve with Internal Relief
June 2000 Form FVC 016 - Rev. 1
Removal of Tank Valve for Repair or Replacement
Before installation or removal of any tank valves, the system must be purged completely of all product. Use proper safety equipment at all
times. An abundant supply of clean water must be readily available and easily accessible as a means of providing IMMEDIATE First Aid
treatment for exposure to ammonia. To insure long term safe operation, the manufacturer recommends that under normal service conditions
this product should be inspected at least once every five (5) years and be repaired or replaced as required. To prevent the accidental
opening of any valve, never carry or grasp a valve by its handwheel or handle.
CAUTION: Contact with or inhalation of Liquid Anhydrous Ammonia or L-P Gas or their vapors can cause serious injury or death.
Dispersement must be in accordance with local regulations.
For the proper handling and storage of Anhydrous Ammonia refer to ANSI Standard K61.1.
For the proper handling and storage of Liquified Petroleum Gas refer to NFPA Pamphlet 58.
TOOLS REQUIRED:
Safety Equipment (i.e. gloves, goggles, and clothing), 12" Adjustable Wrench, 7/16" Open End Wrench and 12" & 18" Pipe Wrench
REFER TO FIGURE 1 FOR THE FOLLOWING STEPS:
Step 1: Safety equipment (i.e. gloves, goggles and clothing) must be worn before continuing with the next step.
Step 2: Before removing valve from tank, place in FULL OPEN POSITION to insure all pressure is bled from system.
Note: An 18" Pipe Wrench will be required. See Warning at top of page.
Disassembly Procedure For Repair
REFER TO FIGURE 1 FOR THE FOLLOWING STEPS DEPENDING ON THE TYPE OF REPAIR REQUIRED:
WARNING: Do not alter, disassemble, or adjust Internal Relief Valve (21). Internal Relief Valve is a factory repair item only.
If problems arise with the Internal Relief Valve, do not use valve, but consult your local dealer for instructions.
Step 1: With valve secured in a bench vise, remove Bonnet (5) from the Body (19), which will expose the complete Bonnet
and Stem Assembly. Note: It is important to inspect Disc Holder (9) rotation. If it does not rotate freely, do not use valve
but consult your local dealer for instructions. Remove old Gasket (18).
Step 2: Secure Bonnet (5) in a bench vise and remove both Handwheel and Disc Nuts (1).
Step 3: Remove Disc Washer (11), Disc (10), Handwheel (2), and Info-Disc (12).
Step 4: Remove Packing Nut (4), Chevron Packing (14), Male Adapter (15), and Packing Spring (17) over the end of Stem (3).
Step 5: Rotate Stem (3) clockwise (CW) using Handwheel (2) if necessary, until stem is disengaged from Bonnet (5). Remove
old Gasket (16).
DEGREE OF ASSEMBLY DEPENDS UPON TYPE OF REPAIR TO BE MADE.
REFER TO FIGURE 1 FOR THE FOLLOWING STEPS:
WARNING: Do not alter, disassemble, or adjust Internal Relief Valve (21). Internal Relief Valve is a factory repair item only.
If problems arise with the Internal Relief Valve, do not use valve, but consult your local dealer for instructions.
Step 1: Install Disc (10), Disc Washer (11), and Disc Nut (1) to Disc Holder (9). Secure Disc Nut (1) to threads of Disc Holder (9)
with center punch mark at thread interface.
Step 2: Lubricate threads of stem with a good quality grease and install Stem (3) into Bonnet (5) until Disc Holder (9) rests against
bottom of bonnet.
Step 3: With the bonnet and stem assembly secured in a bench vise install Gasket (16) and Packing Spring (17).
Step 4: Replace O-ring (13) in groove of Packing Nut (4).
Step 5: Install Chevron Packing (14) and Male Adapter (15) into Packing Nut (4).
Step 6: Lubricate exposed surface of Stem (3) with John Crane Style 279A Packing Lubricant or equal.
Step 7: Place Packing Nut (4) with packing in place over Stem (3) and engage bonnet threads in Bonnet (5). Rotate Packing
Nut (4) while making contact with bonnet threads. Tighten packing nut with torque wrench to 55 ft-lbs.
Step 8: Secure Body (19) in vise. Place Body Gasket (18) over bonnet threads and lubricate threads with a good quality grease.
Step 9: Install bonnet assembly into body and tighten with torque wrench to 95 ft-lbs.
Step 10: Install Handwheel (2), Info-Disc (12) and tighten Handwheel Nut (1) on Stem (3).
Step 11: Check stem packing and valve seat for leaks. Operate handwheel full open to full closed to insure smooth operation.
Assembly Procedure
(OVER)
WARNING
KEEP THIS DOCUMENT WITH THE PRODUCT UNTIL IT REACHES THE END USER.

Safety Tips for Shut-down and Storage
SAFETY TIPS FOR SHUT-DOWN AND STORAGE WHEN TANKS ARE NOT IN USE:
Step 1: Make sure all valves are closed with any exposed outlets / inlets capped to keep out debris and moisture, which will
help to prevent condensation or corrosion of internal parts.
Step 2: Store tanks in accordance with federal, state, and local codes and manufacturer’s instructions. Check periodically for
leakage or excessive pressure build-up. Make corrections or repairs as necessary.
Installation of New or Repaired Tank Valves
REFER TO FIGURE 1 FOR THE FOLLOWING STEPS:
Step 1: Holding the valve in hand, depress and release Check Stem (23) to insure that it is operating smoothly.
Step 2: Apply Teflon tape or sealant on 1-1/4" NPT Threads, and place handwheel in full open position.
Step 3: Install valve into threaded tank fitting and tighten to desired position, taking caution to not overtighten.
CAUTION: Do not damage Check Stem (23) while installing valve.
Step 1: Excess Flow Valves are a Safety Device which will Close in the event of a hose failure i.e., a pull away or accident which
causes the hose to be Severed Completely. It is of utmost importance that these valves be Installed and Operated
Properly in order to provide the Safety Protection they were designed to give. Please read and understand Excess Flow
Valve Technical Bulletin 7.96. If you do not have a copy you may contact your local distributor or Squibb-Taylor at
1-800-345-8105.
a.) TO INSPECT: Place the palm of the hand against the hex head of Check Stem (23) and depress Spring (24)
until Poppet Check (22) is at full stroke against the Yoke Seat (A). Release the Check Stem (23), and observe the
spring return stroke. If the excess flow assembly does not move freely toward Yoke Seat (A) or exhibit a snap
action on the spring return stroke, it must be replaced.
Note: The complete excess flow valve assembly number is S1596-1100.
b.) TO REMOVE: Secure the valve body in a bench vise and using a pipe wrench rotate the Excess Flow
Assembly (7) counter clockwise (CCW)) to remove from Valve Body (19).
c.) TO REPLACE: Clean the internal body threads with a wire brush or solvent and wipe or blow dry with air. Apply
the loctite thread adhesive, part # TL 29005 provided with the Excess Flow Assembly kit to the Yoke (7) and body
threads. Install the new Excess Flow Assembly into the body and tighten with the pipe wrench.
CAUTION: Do not allow loctite to contact the stem or check disc. Allow 30 minutes to dry and check operation of assembly
per a.) above.
Step 2: Before reassembly, clean and inspect the valve seat at (B). Clean all metal components with solvent and wipe or blow
dry with air.
Inspection and / or Replacement of the Excess Flow Assembly Form FVC 016 - Rev. 1