LFARK 400B C 3/4" 1st or 2nd Check Cover Kit

This is a check cover kit for the 3/4" Ames 400B reduced pressure zone backflow preventer. This kit includes the cover and cover O-ring to replace your warped or cracked cover. This will fit either the first or second check. Be sure to lube all O-rings before installation. Genuine Ames repair parts. No special tools are required for servicing.