Backflow Repair Parts & Kits

Watts 1" 800M4, LF800M4, repair kit- vent kit. Kit includes float vent disc assembly (vent float, seal and spring) and bonnet o-ring. Ordering # 0887710

Watts 1" 800M4, LF800M4, or LF800M4FR repair kit- check kit. Kit includes check disc assembly (disc and disc holder), bonnet o-ring and check spring. 

Watts 1" 800M4 and LF800M4  total repair kit. Kit includes check valve repair kit, vent float repair kit, bonnet assembly repair kit and seat repair kit. Ordering # 0887728

Watts 1 1/4"-2" 800M4 or LF800M4 repair kit- vent kit. Kit includes float vent disc assembly (vent float, seal and spring) and bonnet o-ring. Ordering # 0887711

Watts 800M4 and LF800M4 1 1/4"-2" repair kit- bonnet kit. Kit includes bonnet, bonnet o-ring, vent spring, hood and hood screws. 

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.  

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.

ALL INTERNAL PARTS FOR THE 800M4 OR THE LF800M4 IN BOTH THE 1/2" AND 3/4" SIZE ASSEMBLIES.

Watts 1/2"-3/4" 800M4  and LF800M4 repair kit- vent kit. Kit includes float vent disc assembly (vent float, seal and spring) and bonnet o-ring. Ordering # 0887709

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 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" 800M4 and LF800M4 repair kit- rubber total. Kit includes vent seal, check disc and bonnet o-ring. 

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

Watts 1" 800M4, LF800M4 and 800M4FR repair kit- seat kit. Kit includes seat, seat o-ring and bonnet o-ring. Ordering # 0887713

Watts 1 1/4"-2" 800M4 and LF800M4 repair kit- check kit. Kit includes check disc assembly (disc and disc holder), bonnet o-ring and check spring. Ordering # 0887705

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 1/2"-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 1/2"-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 Or LF800M4 repair kit- vent float. Kit includes float disc assembly, vent spring and bonnet o-ring. Ordering # 0887725