The Febco 825Y Series is often used in highly hazardous environments such as industrial and chemical plants. They are also used in irrigation systems where maximum protection is required. The Febco 825Y assembly features two independent check valves separated by a differential relief valve. The body of the Febco 825y is made of brass and contains two ball valves for shutting off the flow at both the inlet and outlet ends. The maximum working pressure is 175psi.