Bettis GVO-C Series Hydraulic Valve Actuator

Brand: Bettis - by Emerson Electric Co.

A hydraulic valve actuator designed for service in safety shutdown and control applications.

Six basic models address low pressure or high pressure operation.
  • Full stainless steel construction and standard carbon-fiber material for light-weight durability and low friction (steel, stainless steel, aluminum and brass optional).
  • Suitable in very dirty environments; scale build up on the piston rod will not affect the cylinder performance.
  • Conventional linkage arms have been replaced with a fully-enclosed transducer, which is a major design innovation.
  • May be fitted with jackscrew or hydraulic pump type manual override.
  • Springs are pre-compressed and sealed in a factory-installed canister: no extended tie-rods required, hence, shorter delivery lead time.
  • Modular factory seal-welded spring canister for increased safety (no need for extended tie-rods) and modular canister also provides application flexibility and spring thrust availability up to 75,000 lbs.
  • Infinite resolution, accuracy to 0.5 percent repeatability.
  • Allows remote mounting of positioners (ideal for harsh environment or hazardous areas).



  • Double-Acting

Approvals & Certifications

  • SIL

Control Type


Operating Temperature

  • As Low as -65° F & up to +400° F. Consult Factory for Low-High Temperatures.

Power Source

  • Hydraulic

Product Type

  • Hydraulic Actuator

Torque / Thrust

  • Up to 500,000 lbs Thrust & Stroke up to 144”

Valve Type

  • Slab, Wedge, Knife, Expanding Gate, Globe, Rising Stem Ball Valves, & Dampers
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