Repair Kits Available By Part Number Section 2 Page - GAMECO
Repair Kits Available By Part Number Section 2 Page - GAMECO
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 />
MAINTENANCE ON THE UPPER BODY OF THE 6579 AND 7579<br />
FILLER VALVES SHOULD BE PERFORMED AFTER ALL GAS IS<br />
EVACUATED FROM THE CONTAINER. EMERGENCY SERVICE<br />
MAY BE CARRIED OUT WITH THE VALVE INSTALLED, BUT ONLY<br />
UNDER THE SAME CONDITIONS REQUIRED FOR RELEASING<br />
LP-GAS (SEE CAUTION).<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. Remove cap and save for reassembly.<br />
If the valve is repaired with gas in the container (emergency<br />
service):<br />
2. Depress upper check to assure lower check is functioning properly.<br />
(<strong>Part</strong> number 3119A Unloading Adapter may be used to depress<br />
upper check.) If the lower check does not restrict the flow of gas<br />
from the valve, the upper body and check must not be removed<br />
because an uncontrolled, hazardous amount of gas will discharge<br />
from the valve. If this is the case, the container must be<br />
emptied and a new filler valve installed.<br />
If the valve is to remain on the cylinder, hold the lower body with a<br />
second wrench to keep it from being unscrewed while removing the<br />
upper body.<br />
Continue with disassembly steps A4.<br />
7579-50 Assembly for 6579<br />
and 7579 Series Filler Valves<br />
If the valve is repaired with all gas evacuated from the container:<br />
3. Clamp the lower body in a vise with filler opening up.<br />
4. Removing upper body:<br />
a. Current Valves: Use a 7 /8" internal hex wrench that can develop<br />
2000 in/lbs torque. Remove and discard upper body (7579-2A)<br />
by turning counterclockwise. See Figure 1.<br />
b. Obsolete Valves: Grip the flat section of the upper body (7579-<br />
2) with a 1 1 /8" open end wrench that can develop at least 2000<br />
in/lbs torque. Remove and discard by turning upper body<br />
counterclockwise. See Figure 2.<br />
5. Remove and discard seat disc and retainer assembly, spring and<br />
gasket, taking care to keep from scratching lower body in gasket<br />
seal area.<br />
6. Inspect lower body and clean if necessary. Be sure interior and<br />
gasket seal area are free of dirt, residue and foreign particles.<br />
B. Reassembly<br />
1. Install new gasket (7579-8) in lower body.<br />
2. Place new spring (7579-3) over guide of lower body as shown.<br />
3. Insert new seat disc and retainer assembly (7579-9) into spring.<br />
4. Apply two drops of cement (5555LT271) to threads of upper body<br />
that mate with lower body as shown in Figure 1.<br />
CAUTION: Do not allow cement to contact seat disc.<br />
5. Press seat disc retainer into guide until female threads of lower body<br />
are exposed. Hold in position with the eraser end of a pencil. Place<br />
new upper body (7579-2A) over pencil and thread into lower body.<br />
Tighten to 1500-1800 in/lbs torque, using a suitable 7 /8" internal hex<br />
wrench.<br />
CAUTION: Unless seat disc retainer is held in guide during<br />
assembly, internal parts of valve may be damaged and threads<br />
of upper body and lower body will not engage properly.<br />
6. Depress and release seat disc and retainer assembly a few times,<br />
If freedom of movement or proper seating is not possible, disassemble<br />
and repeat steps B2 through B5.<br />
7. Install new gasket (2697-20) in upper body.<br />
8. Reinstall valve and or pressurize container. Check for proper<br />
operation and check all seal points for leaks by applying a leak<br />
detection solution.<br />
9. Replace cap.<br />
Figure 1 – Current 7579<br />
Figure 2 – Obsolete 7579<br />
** 5555LT271 Cement<br />
(apply to male threads at these points)<br />
3174-9P Cap<br />
* 2697-20 Gasket<br />
* 7579-2A Upper Body<br />
* 7579-8 Gasket<br />
* 7579-9 Seat Disc & Retainer Assembly<br />
* 7579-3 Spring<br />
7579-1 Lower Body<br />
7579-2 Upper Body<br />
1 1 /8" Wrenching Flats<br />
* These items form the 7579-50 Assembly,<br />
recommended for most repairs.<br />
** Must be ordered separately from Engineered<br />
Controls International, Inc.