... :100% tested 2.supply:20000pcs/month 3.alloy/NPT/PT/12V,24V,110V,220V 4.5/2 solenoid valve Specification Model4V210 ... Frequency5Cycle/secShortest Excitation Time0.05SecondMODEL CHOOSING:*Coil and places:10:single-head double-position20:double-head double-position30C:double-head three ... / pneumatic solenoid valve/5-way/air, gas/ 110V,220V AC, 12V,24V DC