Installation, Operation, Maintenance
Disassembly and Assembly Instructions for
Models AL416 and AL417
June 2000
Form FVC 040 - Rev. 1
Before installation or removal of Quick Acting 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 ANHYDROUS AMMONIA. For LP-Gas service follow NFPA / ANSI 58 Standard for the Storage and Handling of
Liquefied Petroleum Gases, plus all Local and State Safety Regulations.
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.
WARNING
KEEP THIS DOCUMENT WITH THE PRODUCT UNTIL IT REACHES THE END USER.
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, a 3/16" diameter Drift Pin,
and a small Ball Peen Hammer.
Removal of Valve for Repair or Replacement
REFER TO FIGURE 1 FOR THE FOLLOWING STEPS:
Step 1:
Safety Equipment (i.e. goggles, gloves and clothing) must be worn before continuing with the next step.
Step 2:
Before removing valve, place in FULL OPEN POSITION to insure all pressure is bled from the system.
NOTE:
See Warning at top of page.
Disassembly Procedure for Repair
REFER TO FIGURE 1 FOR THE FOLLOWING STEPS:
Step 1:
With valve secured in a bench vise, remove the 3/16" diameter Roll Pin (3), which allows the Handle Assembly (1) to be
removed from the Stem and Disc Holder Assembly (2).
Step 2:
Remove Bonnet (5) from Body (13).
NOTE:
The Bonnet will move upward approximately 1/16" after the last thread is disengaged from the Body, allowing
the Seat Spring (12) to relax to its maximum length. Remove the entire Bonnet Assembly from the Body (13).
Step 3:
With the Bonnet Assembly in hand, remove the Stem and Disc Holder Assembly (2) and Seat Spring (12) from the Bonnet (5).
Step 4:
Remove the Swivel Pad (4) and O-ring (6) from the top of the Bonnet (5). To remove the Seal Retainer (9), O-ring (8), and
Seal Washer (9) from the Bonnet (5) place the 3/16 diameter Drift Pin thru the top hole of the Bonnet (5), and gently push
against the top shoulder of the Bonnet Bushing (7).
NOTE:
Take care not to let the Drift Pin scratch the Bonnet / O-ring sealing surface as the seal is removed.
Assembly Procedure
REFER TO FIGURE 2 FOR THE FOLLOWING STEPS:
Step 1:
Place Stem and Disc Holder Assembly (2) on seat inside Body (13). Place Seat Spring (12) over Stem onto Disc Holder.
Place Seal Washer (10) over stem and push down to rest on top of the Seat Spring (12).
Step 2:
Place O-Ring (8) over Seal Retainer (9) and lubricate O-Ring with a good quality grease compatible with service conditions.
Step 3:
Place O-Ring and Seal Retainer Assembly over Stem with the shoulder side of Seal Retainer (9) facing up. Install Bonnet
Bushing (7) over Stem.
Step 4:
Install Bonnet Gasket (11) in groove on Body (12). Install Bonnet (5) over Stem and press down firmly to engage threads
on Bonnet with internal threads on Body. In order to properly install Bonnet Bushing (7), O-Ring (8), and Seal Retainer (9)
into the bore of Bonnet (5), a
straight
downward push on Bonnet (5) is required for proper alignment. Maintaining a
downward push while rotating Bonnet (5) will engage the Bonnet threads into the Body (13). Tighten the Bonnet
hard
against Bonnet Gasket (11).
(OVER)