Overview Pneumatic actuators provide proportional control of steam or hot or cold liquids in HVAC systems by operating V5011, V5013, and VGF valve assemblies. Replacement devices are available for older Honeywell actuators. Features Rolling diaphragm for long life and low hysteresis. Easily attached to valve. Can be installed after piping valve. Slide lock feature permits simple engagement to valve stem. Direct- or reverse-action control. Does not include positive positioner. Product SpecificationsDimensions (in.)8 in. diameter, 6 1/2 in. highDimensions (mm)203 mm diameter, 165 mm highMaximum Safe Operating Pressure (psi)25 psiMaximum Safe Operating Pressure (kPa)172 kPaTemperature Range (F)0 F to 140 FTemperature Range (C)-18 C to +60 CIncludes311851-062 Stem Extension AssemblyUsed WithValves with bonnet size 1-3/8 in. (35 mm)Operating Humidity Range (% RH)5 to 95% RHDiameter (in.)8 in.Actuator TypeValveFail Safe ModeSpring ReturnStroke (in.)3/4 in.Stroke (mm)19 mmActuator ForceMediumActionDirect ActingSpring Range (psi)2 psi to 7 psiSpring Range (kPa)14 kPa to 48 kPaAir connectionsDual barbed fitting for 5/32 in. O.D. and 1/4 in. O.D. plastic tubing