Quad4 - Four Piston Actuator

Brand: SVF Flow Controls, LLC

The SVF “Quad4™” quarter-turn rack & pinion actuator is a four piston actuator which generates torque around a centrally located pinion, giving more than double the torque of single & double rack & pinion actuator designs.

The increased number of pistons allows their diameter to be reduced while maintaining its high torque, allowing the reduced size of the actuator
  • Internally anodized body for corrosion resistance
  • Available in Spring Return (QS) and Double Acting (QD) models
  • ISO 5211 bottom flange for valve automation
  • NAMUR output drive for installation of limit switches and positioners
  • Bi-Directional Stroke Adjustment
  • ¼” NPT air inlet manifold
  • NAMUR interface for mounting of solenoid valve


Operating Temperature

  • -4° F to 175° F (-20° C to 80° C)

Supply Pressure

  • Minimum: 40 psig (3 bar)
  • Maximum: 120 psig (8 bar)


  • 40 - 15,856 in-lbf

Materials of Construction

  • AL 356-T6
  • POM (Plastic)
  • AL 356
  • Buna ”N” (Standard), Viton
  • Spring Steel
  • AL 380

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