A proportional control valve system provides the ability to infinitely control the position of the internal spool assembly which increases or decreases the amount of flow or pressure being released from the valve. SMC offers 2 types of proportional control valves, a pressure type VEP which controls secondary pressure by varying the current through the solenoid, and a flow rate type VEF which
Model Flow type Pressure type VEF2121 VEF3121 VEF2141 VEF3141 VEF2131 VEP3121 VEP3141 Item 4 1 8 3 , 4 1 8 3 , 4 1 , 8 3 2 1 8 3 , 2 1 4 3 , 8 3 , 2 1 4 3 , Port size Rc , Fluid Air Maximum operating pressure 1.0 MPa 0 to 50C (With no condensation) Ambient and fluid temperature 0.03 s or less 0.03 s or less 0.05 s or less 0.05 s or less Response time Hysteresis 3% F .S.