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Repair Kits Available By Part Number Section 2 Page - GAMECO

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

must be performed only by qualified personnel.<br />

All gas MUST be evacuated from the system before starting<br />

repairs.<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! NH3 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 />

7901T-50 Assembly for 7901<br />

Series Quick Acting Valves<br />

A. Disassembly<br />

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

SEMBLY OR REPAIR. Open valve by lifting lever to vertical position<br />

to release any gas remaining in the system.<br />

2. Completely remove valve from line and clamp in a vice.<br />

3. Using a 11 /16" wrench on hex section of bonnet assembly, turn<br />

counterclockwise. Remove and discard entire trim assembly.<br />

4. Remove and discard gasket.<br />

5. Inspect inside of valve body. Clean if necessary.<br />

CAUTION: Do not scratch or mar seat area.<br />

B. Reassembly<br />

1. Place new gasket 7553W-3 in body.<br />

2. Lift lever of new bonnet assembly to vertical (open) position. Install<br />

by threading clockwise into body.<br />

3. Using a suitable 11 /16" wrench, tighten to 1500 in/lbs. torque.<br />

4. Move lever to horizontal (closed) position and replace valve in line.<br />

5. Pressurize line. Check valve for proper operation.<br />

6. Check all seal points for leaks by applying a suitable leak detection<br />

solution.<br />

7901 Series<br />

* Lever<br />

* Bonnet Assembly<br />

* Gasket<br />

Body<br />

* Found in <strong>Repair</strong> Kit 7901T-50.

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