T&S Brass BL-5550-09 Backflow Preventer 3/8''

The T&S Brass BL-5550-09 Backflow Preventer is a plumbing protection component used in compatible commercial foodservice water lines. The unit has a 3/8-inch connection size, defining the interface required for the corresponding plumbing line. Installed inline with the water supply, its internal check mechanism responds to pressure changes and permits flow in the intended direction while restricting reverse movement. When downstream pressure exceeds the supply pressure, the valve closes to block backflow through the connection. It works with the surrounding piping and fittings to maintain directional water movement within the connected plumbing circuit.