This 1 inch Watts LF25AUB-S-Z3 pressure reducing valve is designed to regulate the pressure of water in your plumbing system. It is made of strong brass and is suitable for use with water. The valve comes in a single union type and has a maximum output pressure of 75 psi.It also has a minimum adjustable output pressure of 25 psi. The inlet and outlet diameters of the valve are both 1 inch. This valve is perfect for use in your business or industrial setting and is a reliable addition to your plumbing system.