This Watts complete rubber parts replacement kit is used for repairing the parts to the 4 inch backflow preventer relief valve. This kit consists of a diaphragm, two molded disc assemblies, two seat O-rings, RV O-ring, two piston O-rings, RV stem O-ring, flow tube O-ring and cover O-ring.
- Factory replacement kit
- Original parts insure long service life
- No special tools required for changing parts
- All parts are made of high quality materials
- Includes Check Disc, Cover O-Ring, Sleeve O-Ring, Piston O-Ring, Rv Disc Assembly, Diaphragm, Piston Seat And Lubricant