Aluminum 3" NPSH Barrel Strainer with Foot Valve (USA) Color_Blue Double check valves back flow

Double check valves back flow prevention assembly is used to protect water supplies from contamination or pollution due to back flow

Our commercial grade heavy-duty DOT approved blue reflective road markers are a great tool for locating fire hydrants

Equivalent part number - FM15F15S

If debris larger than the drilled holes should enter from the dry hydrant outlet located roadside it would not be able to be flushed out into the water source

firefighting or closed pressure applications such as use with nozzles

Aluminum 3" NPSH Barrel Strainer with Foot Valve (USA) Color_Blue Double check valves back flow3 inch NPSH barrel strainer with poppet style check valve. Female threads do not swivel. NPSH is "straight pipe thread" as it seals via a gasket in the female and does not taper like NPT. A foot valve is essentially a check valve that is integrated into this aluminum barrel strainer which is attached to the inlet side (suction side) of a water suction hose to keep it from losing it's prime during the off cycle. This can drastically reduces water relay