4-18. REPAIR INJECTION VALVE (Cont'd).
Hypochlorite solution may be on the injection valve and can cause severe chemical burns. To
avoid injury wear gloves while working on it.
(1) Unscrew injection valve body (1) from bottom of mainline pipe (2).
Care must be taken to prevent ceramic poppet from falling out of valve and becoming lost or
Remove valve adaptor (3).
Remove ceramic poppet (4).
Remove and discard preformed packing (5).
Clean all components. Pay particular attention to possible chemical buildup.
Inspect valve for nicked or damaged seating surfaces or threads and discard if damaged.
Install ceramic poppet (4) in injection valve adaptor (3).
Install new preformed packing (5).
Screw injection valve (1) into bottom of mainline pipe (2).