Description
Watts 774DCDA OSY TS CFM 3 Part of the 774DCDA Series Egress System This second check repair kit This second check repair kit provides all the parts necessary to repair or replace the second check on a 1 1 4 and 1 1 2 inch reduced pressure zone assembly backflow preventer The 40 mil thick liner is more flexible and conforms easier to the shape of the ditch while the 60 mil thick liner provides additional puncture resistance but at the cost of being slightly less flexible