Hayward Threaded Pressure Reducing Pressure Reducing Control Valve, 1 4 in Pipe Size PBV5025TPE1 Toilet Partitions The Bradley S19345JXB is a The Bradley S19345JXB is a combination concealed Halo eye facewash and recessed Spintec drench shower unit designed to be mounted where space considerations are a concern Bradley 120 022E Frostproof Stem 84 5 8" Replacement Part the diaphragm moves up and chemical flows through the valve to the injection point this HAYWARD pressure reducing control valve can apply back pressure to a metering pump to help prevent siphoning and eliminate variable dosage rates due to a fluctuating downstream pressure