Project Equipment offers Pressure and Temperature Switches for Steel Mills. Project Equipment offers valves, pipes, tubes, pipe fittings, etc. The Pressure and Temperature Switches for Steel Mills are also used in chemical plants, pulp and paper mills, water treatment plants, petro chemical plants, diesel locomotives and machine tools. Pressure and Temperature Switches come in Range [-] 1-0 ATMG and Size: 3/8 inch BSP Male.