Backflow Repair Parts & Kits

Watts 1" 800M4 repair kit- vent kit. Kit includes float vent disc assembly (vent float, seal and spring) and bonnet o-ring. Ordering # 0887710

Watts 1/2"-3/4" 800M4 retrofit repair kit- float kit. Kit includes float disc assembly, vent spring, bonnet, and bonnet o-ring. Ordering # 0887726

Watts 1 1/4"-2" repair kit- bonnet kit. Kit includes bonnet, bonnet o-ring, vent spring, hood and hood screws. Ordering # 0887702

Watts 1" 800M4 repair kit- check kit. Kit includes check disc assembly (disc and disc holder), bonnet o-ring and check spring. Ordering # 0887704

RETRO 800M4 FR 1".  Kit includes float disc assembly, vent spring, bonnet and bonnet o-ring.This kit is to convert a regular 800M4 to a freeze resistant (FR) version.  Really, the only difference is the vent float which is sold as a kit by iteself.  It is part number 0887715, RK 800M4 FRV 1"

The difference in the vent float between the two versions is the FR version has a stem in the center with a spring and a "BB" like ball that allows for expansion.

Watts 1 1/4"-2" 800M4 repair kit- rubber total. Kit includes vent seal, check disc and bonnet o-ring. Ordering # 0887708

Watts 1 1/4-2" 800M4 repair kit- vent float kit- kit includes float disc assembly, vent spring and bonnet o-ring. Ordering # 0887716

Watts 1/2"-3/4" 800M4 repair kit- vent kit. Kit includes float vent disc assembly (vent float, seal and spring) and bonnet o-ring. Ordering # 0887709

Watts 1" 800M4 repair kit - vent float kit. Kit includes float disc assembly, vent spring and bonnet o-ring. Ordering # 0887715

Watts 1 1/4"-2" 800M4 repair kit- vent kit. Kit includes float vent disc assembly (vent float, seal and spring) and bonnet o-ring. Ordering # 0887711

Watts 1/2"-3/4" repair kit- check kit. Kit includes check disc assembly (disc and disc holder), bonnet o-ring and check spring. Ordering # 0887703

Watts 1" 800M4 repair kit- rubber total. Kit includes vent seal, check disc and bonnet o-ring. Ordering # 0887707

Watts 1 1/4"-2" 800M4 repair kit- seat kit. Kit includes seat, seat o-ring and bonnet o-ring. To replace you need to find a socket to fit this seat.  Ordering # 0887714.

Watts 1" 800M4 repair kit- seat kit. Kit includes seat, seat o-ring and bonnet o-ring. Ordering # 0887713

Watts 1/2"-3/4" 800M4 repair kit- seat kit. Kit includes seat, seat o-ring and bonnet o-ring. To replace you need to find a socket to fit the seat.  Ordering # 0887712

Watts 1 1/4"-2" 800M4 repair kit- check kit. Kit includes check disc assembly (disc and disc holder), bonnet o-ring and check spring. Ordering # 0887705

Watts 1/2"-3/4" 800M4 repair kit- rubber total. Kit includes vent seal, check disc and bonnet o-ring. Ordering # 0887706

Watts 1/2"-3/4" 800M4 repair kit- vent float. Kit includes float disc assembly, vent spring and bonnet o-ring. Ordering # 0887725