Form
FVC 034—Rev 02
1 of 2
Installation, Operation, Maintenance,
Disassembly and Assembly Instructions
for Models AL344, AL345 & AL360, AL361
February 2008
Form FVC 034 - Rev 02
KEEP THIS DOCUMENT WITH THE PRODUCT UNTIL IT REACHES THE END USER.
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 grasp or carry a valve by its handwheel or handle.
WARNING
CAUTION:
Contact with or inhalation of Liquid Anhydrous Ammonia or LP-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 Liquefied Petroleum Gas, refer to NFPA Pamphlet 58.
TOOLS REQUIRED:
Safety Equipment (i.e. gloves, goggles, and clothing), 12” Pipe Wrench, 1/4” diameter Drift Pin, small Ball Peen Hammer,
7/16” Open-End or Boxed-End Wrench, Center Punch
Removal of Valve for Repair or Replacement
Step 1:
Safety equipment (i.e. gloves, goggles, and clothing) must be worn before continuing to the next step.
Step 2:
The Valve to be repaired must be in the CLOSED position, as shown in Figure 1. Make sure that all product has been removed from
the system prior to any disassembly.
NOTE: See ‘WARNING!’ at the top of this page.
INCORPORATED
DALLAS TEXAS
(214) 357-4591
(800) 345-8105
REFER TO FIGURE 1 FOR THE FOLLOWING STEPS:
Disassembly & Reassembly Procedure for Repair
Step 1:
Remove the Valve from the service line or tank.
Step 2:
With the Handle
○
1
in the ‘CLOSED’ position, drive out the Handle Pivot Pin
○
2
and remove the Handle .
Step 3:
Remove the Handle Centering Ring
○
3
from the Stem
○
4
and keep it for re-assembly.
Step 4:
Clean the part of the Stem that is sticking out of the top of the Bonnet
○
5
and remove any burrs or debris.
Step 5:
Secure the Valve Body
○
6
in a bench-mounted vise, and remove the Bonnet
○
5
by turning it in a counter-clockwise direction. The
Stem
○
4
and the Disc Holder
○
7
may come out with the Bonnet. If so, hold the Bonnet in an upright position and push the Stem
through the Bonnet.
NOTE:
Take note of the position of the parts as the Stem is removed from the Bonnet. This will help in the reassembly of the Valve.
Step 6:
Remove any Seals that may be on the Stem.
Step 7:
Remove the Spring
○
8
and the Centering Bushing
○
9
from the Stem.
Step 8:
Inspect the Stem for “pitting”, damage or undue wear. The Stem must be replaced if any one of these conditions exist. If the Stem is
in good condition, clean it thoroughly and keep it for reassembly.
Step 9:
Place the Disc Holder
○
7
in a bench-mounted vice and secure it just tightly enough to allow removal of the Jam Nut
○
10
, the Disc
Washer
○
11
, and the Disc
○
12
. Discard the old Disc and the Jam Nut.
Step 10:
Install the new Disc, followed by the old Disc Washer, then the new Jam Nut. Tighten the Jam Nut, then, with the Jam Nut facing
upward, “stake” the thread and the Jam Nut at point
○
A
using a sharp-pointed punch.
Step 11:
Remove and discard the Seals from the Stem (Body/Bonnet Seal
○
13
, Seal Retainer
○
14
, Stem Seal
○
15
, Seal Sleeve
○
16
, and Seal
Washer
○
17
).
Step 12:
Inspect the Bonnet
○
5
for thread damage.
Step 13:
Clean the Bonnet, the Handle Assembly, and the Body thoroughly prior to beginning the reassembly process.
Step 14:
Lubricate the new Seal Washer
○
17
with a small amount of the lubricant provided in the kit. Then use a pencil, or a round object, to
guide the Seal Washer into the counterbore of the Bonnet until it is bottomed out.
Step 15:
Lubricate the Body/Bonnet O-Ring Seal
○
13
with a small amount of the lubricant provided in the kit. Then place the O-Ring over the
threads of the Bonnet, taking care not to cut the O-Ring.
Step 16:
Secure the Valve Body
○
6
in the vise. Use the 80 Grit abrasive cloth provided in the kit to remove any rust or pitting on the Seat
Surface
○
B
. If the Seat Surface cannot be polished to near new-valve condition, the Valve Body must be replaced.
REFER TO FIGURE 1 FOR THE FOLLOWING
