Watts RK 757/757DCDA-CK1 8 - Part of the RK-757 Series Inserta Tee it offers a choice between

it offers a choice between a natural black rubber side and a UV-resistant colored edge

This assembly consists of a lead free cast copper silicon alloy body construction

and finishes to accommodate a wide range of commercial building requirements

the finished surface is permeable allowing water to pass through

2 1/2 IN Nominal size

Watts RK 757/757DCDA-CK1 8 - Part of the RK-757 Series Inserta Tee it offers a choice betweenThis first check repair kit provides all the parts necessary to repair or replace the first check on a 8 inch double check valve assembly backflow preventer, model 757, and double check detector assembly backflow preventer, model 757DCDA. This kit consist of a first check module, check module O ring, and red silicone disc elastomer. Features Factory replacement kit No special tools required for servicing All parts are made of high quality materials