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stainless steel rack and pinion actuator

Stainless Steel Actuators

Series 22/23

Flow Line Series 22 double acting and Series 23 spring return actuators are technically advanced stainless steel rack and pinion actuators. The Series 22/23 incorporates seven sizes ranging from 147 to 9462 in pounds. Features such as fine tooth rack and pinion. Internal travel stops and stainless steel hardware ensure the standard of performance expected from Flow Line Controls valve automation products.

  • Features
  • Versatility
  • Engineering
  • Torque

Series 22 Stainless Steel Actuator Body

  • Cast stainless steel body machined to fine tolerances
  • Internal porting is standard eliminating any need for external tubing
  • Valve mounting is accomplished with ISO drillings on all sizes
  • Limit switch, positioner and solenoid valve mounting comply with Namur standards

Series 22 Stainless Steel Actuator Pinion

  • Pinions are machined from a single piece of stainless steel
  • Fine-tooth gears eliminate hysteresis and lost motion
  • ISO female drives are standard on all sizes
  • Bottom entry pinion provides anti-blowout protection

Series 22 Stainless Steel Actuator Pistons

  • Piston o-rings are held in place by a precisely machined groove matching the o-ring diameter
  • Internal RTFE piston guide precisely aligns the piston to the pinion to prevent piston roll

Series 22 Stainless Steel Actuator End Caps

  • Cast stainless steel end caps machined to fine tolerances
  • End cap o-rings are captive on all actuator sizes

Series 22 Stainless Steel Actuator Air Supply

  • All actuator sizes are equipped with 3/4" NPT supply ports
  • Supply pressure on all sizes is rated up to 147 psi air, hydraulic oil, or water depending on seals used

Series 22 Stainless Steel Actuator Bolts and Fasteners

  • All fasteners are stainless steel for corrosion resistance

Series 22 Stainless Steel Actuator Travel Stops

  • Internal travel stops allow ±5 degrees adjustment at both ends of stroke

Series 22 Stainless Steel Actuator Springs

  • Springs are stainless steel

Series 22 Stainless Steel Actuator Position Indicator

  • Functions as a visual indicator for 2-way valves and also for 3-way applications with a simple change of built-in indicator tabs

Series 22 Stainless Steel Actuator Accessories and Valve Mounting

  • Namur VDI/VDE 3845 mounting patterns are standard throughout the size range
  • ISO 5211 is standard mounting for all actuators throughout the size range

spring return actuatorSeries 21 spring return actuators are available through out the size range.


solenoid valvesSeries 50 solenoid valves are available in 1/8", 1/4" and 1/2" NPT


limit switchesSeries 52 and 53 limit switches provide local and remote valve position.


positionersSeries 55 and 56 positioners are available with either a 3-15 psi or a 4-20 MADC signal.


direct mount actuatorsSeries 20 and 21 actuators mount directly to ball valves conforming to ISO 5211. Bracket and couplers are available for other patterns.


direct mount actuatorSeries 20 and 21 actuators mount directly to butterfly valves conforming to ISO 5211. Other mounting patterns are available.