ARK 400B CK1 1 1/4 - 1 1/2" 1st Check Kit

This is a first check repair kit for the 1 1/4 - 1 1/2" Ames 400B reduced pressure zone backflow preventer. This kit includes the complete first check assembly and cover O-ring. Be sure to lube all O-rings before installation. Genuine Ames repair parts. No special tools are required for servicing.