- 1 - 7th Edition No. SS2-8210-0100 OVERVIEW The Air-O-Motor is a pneumatic actuator. It accepts the pneumatic output of positioners or other control equipments, converts the pneumatic force into a mechanical force with the diaphragm, and let the diaphragm force balanced with the spring force, there by setting the valve position. SPECIFICATIONS Types 1) Direct action As the air pressure fed to the top chamber of the diaphragm case increases, the actuator stem moves downward. 2) Reverse action As the air pressure fed to the bottom chamber of the diaphragm case increases, the actuator stem moves upward. Material . Diaphragm case SS400 . Diaphragm Cloth embedded chroloprene rubber . Actuator stem SUS403 stainless steel . Yoke FC200 (Optional: SCPH2) Spring range 20 to 98 kPa {0.2 to 1.0 kgf/cm2} 40 to 120 kPa {0.4 to 1.2 kgf/cm2} 40 to 200 kPa {0.4 to 2.0 kgf/cm2} 80 to 240 kPa {0.8 to 2.4 kgf/cm2} Supply pressure 120 to 270 kPa {1.2 to 2.8 kgf/cm2} Stroke 37.5, 50, 75, 100 mm Air connection Rc 1/4 or 1/4NPT internal thread Ambient temperature -30°C to +70°C Action Model Number Direct VA5D Reverse VA5R Optional accessories Positioner*, pressure regulator with filter, hand wheel*, limit switch, solenoid valve, motion transmitter, booster relay, lock-up valve, and others. Note) Accessories with the asterisk mark (*) are selected from the following types depending on the actuators to be combined. Performance Output Varies depending on utilized spring range and air supply pressure. Accuracy Refer to Table 1. Dimensions and weight Refer to Figure 1 and Table 2. Finish Blue (Munsell 10B5/10), silver or other specified colors. Actuator Positioner Hand wheel P/P I/P Top Side VA5 HTP AVP/HEP THM SHM Air-O-Motor Spring Type Diaphragm Actuator Model VA5 7 13 Specifications are subject to change without notice. “This product is designed for general industrial use.”