WILKINS/ZURN COMPLETE RUBBER KIT 25MM (RK1-375R) KIT INCLUDES : Both Check Discs, Check O-rings, RV diaphragm, RV Disc, RV O-rings, and Vessel O-rings

WILKINS/ZURN MAJOR SERVICE KIT 25MM(RK1-375) KIT INCLUDES : Both Check Assemblies, RV Stem Assembly, RV Seat, RV Spring, RV O-rings, and Vessel O-rings