... 20---120centigrade;standard:BSW;Series PU220 is Direct-acting Solenoid Valve ,the valve body is brass;operating pressure:0-1MPaspecification of Series ... 1"internal thread Series PU225 is brass Pilot operated safety valve,operating pressure:0.5-1.5MPa,specification of Series PU225 ... 1.5"internal threadSeries SPU225 is SS Pilot operated safety valve,operating pressure:0.5-1.5MPa,specification of Series ...