The v-solenoid II is made of engineered composite material and specially designed to operate pneumatic 1 / 4 turn valve actuators. It is highly corrosion resistant, virtually maintenance free and has a life time of multi million cycles. Special features: Convertible from 3 / 2 to 5 / 2 function and back by turning of the rotary sealing plate-no additional parts or tools required. Exhaust feedback in spring return configuration-no environmental atmosphere can enter the actuator's spring chamber. Multi million cycles even with poor air quality due to unique patented sealing technology. Coil can be mounted at any 90 degree increment-no spacer required. Basic data: Mounting pattern: Standard NAMURPressure Range: 2. 5 to 8 barTemperature Range: -40C to 50CProtection Class: IP65Voltages: 24VAC / VDC, 110VAC and 240 VAC (other voltages on request) Models: Standard, Atex Ex, Ex Proof, Intrinsically SafeCoils: Models AtexEx, ExProof and I-Safe: High quality German coils, 100% duty cycleStandard Model: Chinese brand (German coil on request) , 100% duty cycleCertificates: Atex Ex, CE, CSA, FM, ULNEMA types 1, 2, 3, 3S, 4 and 4XOther: Branding on request, different color on requestDistributors and stockist's are welcome to contact us! .