Azbil Corporation No. SS2-CVG100-0200 - 3 - Applicable actuator: . Spring piston cylinder actuator: Model PSA6, 7 . Springless piston cylinder actuator: Model VP, SLOP Table 2 High-pressure applications Use Supply air pressure Ps *i Note *i. Ps value are maximum supply air pressure value used by customers. (They do not indicate supply air pressure to an actuator.) Model No. [Connection screw:Rc1/4] Model No. [Connection screw: NPT1/4] General (indoor use) Ps < 860 kPa {8.7 kgf/cm2} J320A101 8320A101 Water-proof (outdoor use) Ps < 860 kPa {8.7 kgf/cm2} J320A102 8320A102 Flameproof (TIIS d2G4) Ps < 860 kPa {8.7 kgf/cm2} JE3J320A101 JE38320A101 A piston cylinder actuator (positive actuation) with a positioner and an air failure open mechanism are combined with a three-way solenoid valve for high-pressure application. Operation: Control and on/off operation Air failure: CV-Open Solenoid valve: CV-Open when energized CV control when de-energized Figure 2 Combination of springless piston cylinder, positioner, air-failure open mechanism, and three-way solenoid valve Positioner Pressure regulator CV with filter Input signal Air supply Three-way solenoid valve Pilot lock valve Check valve Volume tank Air valve 8 8