Watts 0888136 (Ames 7018519) – 3/4″ – 1″ Relief Valve Rubber Kit for 919 or Ames 400B

Watts: 0888136 – 3/4″ – 1″ Relief Valve Rubber Parts Kit For a 919 RP (Same as 7018519)

Ames: 3/4″-1″ – Relief Valve Rubber Kit for a 400B RP

Kit includes: relief valve disc, RV diaphragm, RV seat O-ring and cover O-ring