AVAPR150F-I Dixon Cast Brass Global Adjustable Pressure Restricting Angle Valve - 1-1/2" Female NPT Inlet x 1-1/2" Male NST(NH) OutletFeatures: NFPA requires restricting valves where the inlet pressure exceeds 100 PSI. Unlike the pressure regulating type of valve, the restricting valve has no effect on the static pressure of a system. Preset orifices restrict the volume of water thereby lowering the pressure of the flowing water; NFPA requires restricting valves where inlet pressure exceeds 100 PSI. Restricting valve has no effect on the static pressure of a system. Restricting