Kit Includes: Two Check Assembly O-Rings, Two Disc Assemblies, One Cover O-Ring, One RV Diaphragm, One RV Seat O-Ring, One Sensing Passage O-Ring, One Diaphragm Plate O-Ring, One RV Lower Stem O-Ring, One RV Upper Stem O-Ring, One RV Disc Assembly and One Bleed Screw O-Ring.