Watts 774DCDA-LF-GPM 4 - Part of the 774DCDA Series ZC100F-3NH Waterproof Integration & Debris Mitigation:

Waterproof Integration & Debris Mitigation: Includes design elements to interface securely with waterproofing membranes and a grate/strainer layout that blocks debris

UPC - 098268502541

and specialized strainers to adapt to specific installation needs

UPC - 098268634297

a composite material which takes durable nylon and adds glass fibers to make it stronger

Watts 774DCDA-LF-GPM 4 - Part of the 774DCDA Series ZC100F-3NH Waterproof Integration & Debris Mitigation:This 4 IN double check detector backflow preventer assembly prevents the backflow of fire protection system substances from being pumped or siphoned into the potable water supply. It consists of a compact construction and short lay length, ideal for retrofit installations. It features a lightweight stainless steel body, thermoplastic and stainless steel check valves, and low head loss. It can be installed in a horizontal or vertical flow up position.