Solenoid Valve Products now available in Brass, Stainless ... ;standard:BSW;Series PU220 is Direct-acting Solenoid Valve ,the valve body is brass;operating pressure:0-1MPaspecification ... thread Series PU225 is brass Pilot operated safety valve,operating pressure:0.5-1.5MPa,specification of ... internal threadSeries SPU225 is SS Pilot operated safety valve,operating pressure:0.5-1.5MPa,specification of ...