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<br />
must be performed only by qualified personnel.<br />
MAINTENANCE ON THE VAPOR RETURN VALVE SHOULD BE<br />
PERFORMED AFTER ALL GAS IS EVACUATED FROM THE<br />
CONTAINER. EMERGENCY SERVICE MAY BE CARRIED OUT<br />
WITH GAS IN THE CONTAINER BUT ONLY UNDER THE SAME<br />
CONDITIONS REQUIRED FOR RELEASING LP-GAS (SEE<br />
CAUTION BELOW).<br />
Installation, usage and maintenance of this product must be<br />
in compliance with all Engineered Controls International, Inc.<br />
instructions as well as requirements and provisions of NFPA #54,<br />
NFPA #58, DOT, ANSI, all applicable federal, state, provincial and<br />
local 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 passed<br />
along to the end user of the product.<br />
CAUTION: Contact or inhalation of liquid propane, ammonia<br />
and their vapors can cause serious injury or death! NH 3<br />
and<br />
LP-Gas must be released outdoors in air currents that will insure<br />
dispersion to prevent exposure to people and livestock. LP-Gas<br />
must be kept far enough from any open flame or other source of<br />
ignition to prevent fire or explosion! LP-Gas is heavier than air and<br />
may not disperse or evaporate rapidly if released in still air.<br />
Disassembly and <strong>Repair</strong> Procedure<br />
CAUTION: READ THROUGH ALL OF THESE INSTRUCTIONS,<br />
INCLUDING 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,<br />
clothing, tools and work area must be completely free of oil,<br />
grease and foreign matter to prevent contamination of component<br />
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. Place a vapor return coupling (part number 3171) on vapor valve.<br />
Stand aside and tighten onto 1 1 /4" Acme threads to close the<br />
7573D-81<br />
Vapor Return<br />
Assembly for 7573A, 7573AC<br />
Series Vapor Return Valves<br />
internal excess flow valve. Leave coupling in place. Continue<br />
with steps A3-5, B1-9.<br />
If the valve is repaired with all gas evacuated from the container:<br />
3. Use a 1/2" hex allen wrench and turn counterclockwise to remove<br />
upper body and save for reassembly. Hold lower body with 1 3 /8"<br />
open end or crescent wrench.<br />
4. Remove vapor return coupling, old (7573-9) gasket and (2797-20)<br />
gasket from body. Discard.<br />
5. Remove old (7556B-8) stem assembly and (7573-10A) spring<br />
from main body. Discard.<br />
B. Reassembly<br />
1. Place new (7573-10A) spring over tube guide in main body.<br />
2. Place new (7573-9) gasket into recess of main body.<br />
3. Place new (7556B-8) stem assembly on spring. Align lower stem<br />
to hole in tube of lower guide.<br />
4. Align upper body into position and engage threads 1 to 2 turns.<br />
Depress stem and seat disc assembly to assure it is in the<br />
tube of the lower guide.<br />
5. Continue to assemble and securely tighten upper body to main<br />
body with 700 in/lbs torque.<br />
6. Place new (2797-20) gasket in undercut of vapor body.<br />
7. With pressure in the container, assemble and remove the vapor<br />
return coupling several times to check for the proper opening and<br />
closing of the back check valve. Do not over tighten coupling.<br />
Use hand torque only.<br />
8. Remove vapor return coupling. Check all joints and stem and seat<br />
disc seal with high quality leak detection solution.<br />
9. Replace vapor return cap.<br />
7573D<br />
* 2927-20 Gasket<br />
7556B-8 Stem Assembly<br />
7573-9 Gasket<br />
* 7573-10 Spring<br />
* These parts are included in 7573A-81<br />
Kit