... performance, low Leakage. 3.Easy to implement remote control. Two Way Pneumatic Water Flow Control Valve Main Technical Parameters DN(mm)1520253240506580100125150200250300350400450500600Ball core typeFloat ... stainless steelZG1Cr18Ni9Ti,304,304L,316,316L,corrosion-resisting alloy…lSphere/seat material:PTFE,A105,1Cr13, 304,304L,316,316L,corrosion-resisting ...