WILKINS/ZURN COMPLETE RUBBER KIT 20/25MM (RK34-975XLR)KIT INCLUDES : Both Check Discs, Check O-rings, RV diaphragm,RV Disc, RV Stem O-ring, and RV Seat O-ring

WILKINS/ZURN MAJOR SERVICE KIT 20/25MM(RK34-975XLC)KIT INCLUDES : Both Check Poppets, Check Springs,RV Stem Assembly, RV Spring, and O-rings

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Backflow Spare Parts Booklet 4.56 mb