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Repair Kits Available By Part Number Section 2 Page - GAMECO

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WARNING: Installation, disassembly, repair and maintenance must<br />

be performed only by qualified personnel.<br />

All gas MUST be isolated from the system before starting repairs.<br />

Maintenance may be performed with the valve installed or with<br />

valve removed from the line. In either case, the gas supply must be<br />

isolated from the line by closing a separate shut-off valve.<br />

Installation, usage and maintenance of this product must be in<br />

compliance with all Engineered Controls International, Inc. instructions<br />

as well as requirements and provisions of NFPA #54, NFPA<br />

#58, DOT, ANSI, all applicable federal, state, provincial and local<br />

standards, codes, regulations and laws.<br />

Inspection and maintenance on a periodic basis is essential.<br />

Be sure all instructions are read and understood before installation,<br />

operation and maintenance. These instructions must be<br />

passed along to the end user of the product.<br />

CAUTION: Contact or inhalation of liquid propane, ammonia and<br />

their vapors can cause serious injury or death! NH 3<br />

and LP-Gas<br />

must be released outdoors in air currents that will insure dispersion<br />

to prevent exposure to people and livestock. LP-Gas must be kept<br />

far enough from any open flame or other source of ignition to<br />

prevent fire or explosion! LP-Gas is heavier than air and may not<br />

disperse or evaporate rapidly if released in still air.<br />

Disassembly and <strong>Repair</strong> Procedure<br />

CAUTION: READ THROUGH ALL OF THESE INSTRUCTIONS, IN-<br />

CLUDING THE NOTICE AND WARNINGS ON THE BACK OF THIS<br />

SHEET, BEFORE BEGINNING ANY DISASSEMBLY OR REPAIR.<br />

NOTE: <strong>Repair</strong>s must be performed in a clean area. Hands, clothing,<br />

tools and work area must be completely free of oil, grease and foreign<br />

matter to prevent contamination of component parts and valves.<br />

A. Disassembly<br />

1. EVACUATE ALL GAS FROM THE SYSTEM BEFORE ANY DISAS-<br />

SEMBLY OR REPAIR. Open handwheel as far as it will go to release<br />

any gas remaining in the container.<br />

CAUTION: Do not apply force after valve is fully open.<br />

A7511-50 Assembly for<br />

A7511AP, A7511FP, A7512AP &<br />

A7512FP Shut-Off Valves<br />

2. Using a 3 /4" wrench, remove four cap screws from bonnet by turning<br />

counterclockwise, lift bonnet away from valve body.<br />

3. Remove body gasket and discard.<br />

TO INSTALL NEW SEAT DISC:<br />

4. Clamp the square section of bonnet in a vise.<br />

5. While holding the hex section of the seat disc retainer with a wrench,<br />

use another wrench to remove the seat disc retaining nut.<br />

6. Remove and discard seat disc (A7511F-4).<br />

7. Immerse new seat disc in water immediately prior to assembly.<br />

8. Install new seat disc (A7511F-4) by pressing into recess of seat disc<br />

retainer.<br />

9. Apply Loctite cement (5555LT) to the first three threads of seat disc<br />

retainer.<br />

CAUTION: Do not allow Loctite to contact seat disc.<br />

10. Thread on disc retaining nut and using a wrench, apply sufficient<br />

torque to fully compress seat disc against retainer. Stake nut in two<br />

places at retainer threads (see Figure 2) to prevent loosening.<br />

NOTE: If no further repairs are required, disregard steps A-11<br />

through A-16 and B-1 through B-9 of the instructions. Finish<br />

reassembly by following steps B-10 through B-14 only. TO IN-<br />

STALL ALL OF THE A7511-50 REPAIR PARTS, FOLLOW ALL OF<br />

THE REMAINING INSTRUCTIONS.<br />

11. Remove handwheel locknut by turning counterclockwise with a<br />

small wrench to allow removal of washer and handwheel.<br />

12. Using a 1 5 /16" wrench with a handle of sufficient length to develop<br />

a minimum of 1000 in/lbs torque, turn seal housing counterclockwise<br />

and carefully remove from bonnet.<br />

7513-13 Locknut<br />

7560-37 Washer<br />

Figure 1<br />

7509-15 Handwheel<br />

*7188-4 O-ring<br />

7509-11 Seal Housing<br />

*7509-42 Pressure Seal Rings (2)<br />

*7509-9 Jam Ring<br />

*7509-21 Washer<br />

* These items are included in the A7511-50<br />

*2060-40 Gasket<br />

Assembly recommended for most repairs.<br />

7509-17 Spring<br />

7509-14 Stem ** Must be ordered separately from Engineered<br />

Controls International, Inc.<br />

7509-2 Bonnet<br />

7509-18 Screw (4)<br />

*7509-8K Gasket<br />

7509-7 Stem Holder<br />

7509-16 Stem Retainer<br />

A7511F-5 Seat Disc & Retainer Assembly<br />

Body<br />

A985B Plug (not shown)<br />

**5555GS-3 Grease<br />

**5555LT Loctite Cement<br />

**5555PL Litharge Cement<br />

Figure 2<br />

Seat Disc & Retainer Assembly<br />

Seat Disc Retainer<br />

*A7511F-4 Seat Disc<br />

Seat Disc Retainer Nut<br />

Stake here

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