This category includes various types of dual checks that can be used for backflow prevention..Lo.ng for WATTS Dual Check Backflow Preventer, In AJ ? Grainger’s got your back. Price $ Easy ordering convenient delivery. Log in or register for .This category contains fill valve and backflow preventer combinations. These valves are designed to provide make up water to the boiler and prevent backflow when .Watts Backflow Preventer Retrofit Spools Replaces your old or ineffective backflow preventers with a fast and flexible approach..
Watts Backflow Prevention Products cross connection control, backflow preventer, backflow prevention, backflow, back flow, double check valve and much more .Watts Backflow Prevention Products cross connection control, backflow preventer, backflow prevention, backflow, back flow, double check valve and much more .Series LF Lead Free* Dual Check Valves prevent the reverse flow of polluted water from entering into the drinking water supply at the service entrance or at individual outlets. It consists of a Lead Free* cast copper silicon alloy body construction, with two plastic replaceable check valves, and stainless steel springs..Series D Dual Check Valves with Intermediate Atmospheric Vent prevent the reverse flow of or cold polluted water from entering into the potable water supply. It consists of a brbody with stainless steel internal parts, integral strainer, and two durable, sealing, rubber check valves. Series D is designed for .