... which have no effect on bronze.1-1/2”(40mm), 2”(50mm), 2-1/2”(63mm), 4”(100mm), 6”(150mm), 8”( ... vibration occurs & pressure fluctuates constantly.1-1/2”(40 mm), 2”(50mm), 2-1/2”(63mm), 4”(100mm), 6”(150mm) dial ... thermometers for wall, panel or direct mountingDial size from 2”(50m) to 10”(250mm)Copper braided, stainless steel ... stem lengths, connections and configurations pressure gauge control valve