LEFT DISCHARGE VALVE, TUBES, AND RELATED PARTS REPLACEMENT (FIXED FIRE
EXTINGUISHER) (Sheet 3 of 5)
Make sure all connections and seating surfaces are free of nicks, burrs, or other defects that could
cause leakage. Replace any damaged part.
Apply zinc chromate primer (Item 50, Appendix D) to all
threads prior to installation of threaded tube hose connections.
Secure check valve (A) in vise.
Using 15/ 16 inch wrench, install bushing (B) into free flow end of check valve (A).
Using 3/4 inch wrench, install adapter (C) into bushing (B) and tighten.
Using 7/8 inch wrench, install tube (D) loosely onto adapter (C). Tube (D) must remain loose for
positioning during installation.
Go on to Sheet 4