Backflow Repair Parts & Kits

4000SS/5000SS RV rubber kit 2 1/2" - 10".  This kit is just the rubbers to rebuild the relief valve only.

This is the complete RV assembly, brass body with internals and the bolts and o-ring to attach it to the main body as well as hose fittings.

For models 375, 375A, 375AST, 475/475V sizes 2 1/2", 3", 4", 6"

Watts 2 1/2"- 10" 957/957RPDA repair kit- relief valve rubbers. Kit includes diaphragm, inlet coupler o-ring and piston assembly. 

Watts 2 1/2" - 4" 957 repair kit- rubber total. Kit includes first and second check module o-rings, two red silicone (RS) disc elastomers, two e-clips, relief valve diaphragms, relief valve inlet coupler o-ring and relief valve piston assembly. Ordering # 0889373

Watts 2 1/2" - 3" 909 lead free repair kit - rubber total. Kit includes check disc, cover o-ring, sleeve o-ring, piston o-ring, rv disc assembly, diaphragm, piston seal and lubricant. Ordering # 0794089

Watts LFRK 009 2 1/2" - 3" Lead free repair kit- first check kit. Kit includes check assembly, cover o-ring and flow tube o-ring. Order # 0794054 

Watts 009 and LF009 2 1/2" and 3" lead free repair kit- relief valve total repair kit. Kit includes seat, stem assembly, spring, two piston o-rings, flow tube o-ring and cover o-ring. Ordering # 0794052

PART#4000906 2 1/2"-3" RV RUBBER KIT

PART# 4000904 2 1/2"-3" RUBBER REPAIR KIT

975 RELIEF VALVE RUBBERS AND SPRING. 2 1/2"-6".  

374/475  2 1/2"-6" RV RUBBER

This is the relief valve rubbers with the RV spring kit. for the 375. 375A, 375AST, 475 models.

909 and LF909 2 1/2" - 3" Repair Kit- Second check rubber. Kit includes check disc, cover o-ring and lubricant. Ordering # 0887226

Watts RK 909 2 1/2"-3" Repair kit- Rubber parts for the first check. Kit includes check disc, cover o-ring and lubricant. Ordering # 0887220

Watts LFRK 009 2 1/2" - 3" lead free repair kit- total kit.  Kit includes complete relief valve repair kit, complete first and second check repair kit, Order # 0794051

Watts LFRK 009 2 1/2" - 3" lead free repair kit - second check. Kit includes check assembly, cover o-ring and flow tube o-ring. Order # 0794055

860/880 2 1/2" - 10" internal relief valve excluding the seat.  THIS DOES NOT FIT THE NEW VERSIONS THAT ARE LEAD FREE, LF860 OR LF880

Watts 2 1/2" - 4" 957/957RPDA repair kit- second check kit. Kit includes second check module, check module o-ring and epdm disc elastomer. Ordering# 0899216

Watts 2 1/2" -  3" 909 lead free repair kit - Vent total kit. Kit includes diaphragm, disc and piston assembly, seat, seat o-ring, adapter o-ring and lubricant. Ordering # 0794085

Watts 009 and LF009 3" Lead Free repair kit- Rubber total. Kit includes diaphragm, two molded disc assemblies, two seat o-rings, rv o-rings, two piston o-rings, rv stem o-ring, flow tube o-ring and cover o-ring. Ordering # 0794056

Watts LFRK 009 2 1/2" - 3" lead free repair kit- relief valve rubber kit. Kit includes diaphragm, molded disc assembly, piston o-ring, stem o-ring and cover o-ring. Order # 0794053

PART# 905060  CHECK RUBBER FOR ONE CHECK 3"

Watts 2 1/2" - 3" 909 and LF909 repair kit - relief valve kit. Kit includes sleeve o-ring, piston o-ring, stem o-ring, rv disc assembly, diaphragm, piston seal, bottom plug o-ring, adapter o-ring and lubricant. Ordering # 0794081

PART# 905087  COMPLETE CHECK ASSY 825/825YD 3"