The 3'''' 500XLHR Pressure Reducing Valve works effectively for industrial water lines and commercial irrigation systems with high-flow rate capacity and low falloff. It includes a spring range of 75 psi to 125 psi, factory set at 85 psi (field set 2 1/2'''' and 3''''). The balanced piston design enables the regulator to respond seamlessly to changes in the system flow demand, ultimately providing vital protection from inlet pressure changes. The direct-acting integral bypass design prevents buildup of excessive system pressure caused by thermal expansion. The all-bronze body and threaded bell provide superior corrosion resistance and easy access to the internal system. You will save valuable installation time and labor costs.