F Series Pneumatic Valve Actuators

Spring Return & Direct Acting 90° Pneumatic Valve Actuators-Up to 1,000,000 Cycles

For use on quarter turn (90 degree)ball vales, plug valves, dampers, and resilient seated and high performance butterfly valves, the F Series Pneumatic valve actuator offers a simple and cost effective solution for valve automation needs. This pneumatic valve actuator is available in double acting and spring return fail safe configurations.


pneumatic valve actuator

Spring Return F Series

The Assured Automation F Series actuators operate with compressed air ranging from 40-120 PSI. F Series require no lubrication due to the carbon filled Teflon guide bands which keep the piston seals from wear and are self-lubricating.

The rotation of 90 degrees is caused by two dual opposed piston gear racks, which turn a center drive shaft. The drive shaft when coupled to a quarter turn valve drives the valve either open or closed. Position indication is visual with a top mounted indicator.

Additional accessories can be added such as Solenoids, Limit Switches, and Positioners as required.


•Compact rack and pinion design for tight spaces.
• Up to 1 Million Cycles
• Self Lubricating Piston Seals
• Double Acting and Spring Return models either Fail Open or Fail Close
• Direct mounting to ball and butterfly valves- (See ISO valve mounting table below)
• Multiple ISO drillings on each actuator: NAMUR DVI/DVE 3845, DIN 3337, ISO 5211
• Namur Solenoid and Limit Switch Mounting
• Removable drive insert for diamond or square configuration
• Dual travel adjustment bolts
• Visual Position Indicator (Open/Closed)


Housing: Chromated aluminum with dual component polyurethane coating
Mounting and Shaft: High grade aluminum


Solenoids: NAMUR mount (voltages of 12 to 24 VDC, 24 to 220 VAC), NEMA-4, NEMA-7, intrinsically safe
Limit Switches: Mechanical, proximity, ASI, fieldbus; visual open and closed indication
Positioners: Pneumatic (3 to 15 PSI control); electropneumatic (4 to 20 mA control)


Temperature Range: -4 °F to +175°F
Supply Pressure: Spring Return: 40 to 120 psi Direct Acting: 20 to 120 psi
Torque Output: up to 40,000 in-lbs. (at 80 psi supply pressure) see torque charts on pages 2 & 3
Service Life: Up to 1 Million Cycles
Mounting/Shaft: ISO 5211/Female

ISO Chart

Iso mount chart-1

About Kim O'Neill

Marketing administrator at Assured Automation, a leading provider of automated valves and flow components for industrial process control applications. For over 30 years Assured Automation has provided state of the art automation to a diverse clientele ranging from small equipment manufacturers to Fortune 500 Manufacturing, Chemical and Pharmaceutical companies. The Assured Automation product line consists of a complete offering of standardized automated valve assemblies with a variety of commonly used accessory items. In addition, we offer complete valve automation services where we supply special automated valve assemblies designed around your specified products or your particular applications. Full design capabilities are offered including AutoCAD, Solidworks or other commonly used design and drawing programs. In addition to standard products, Assured Automation develops customized solutions for specific customer challenges. You can find Kim O'Neill on LinkedIn.
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