Bettis GS-Series Scotch Yoke Hydraulic Valve Actuator

The Bettis™ GS-Series Scotch Yoke Hydraulic Valve Actuator, engineered by Emerson, is a heavy-duty, high-performance actuator designed to deliver reliable, controlled rotary motion for quarter-turn valves in critical process applications. Utilizing a Scotch yoke mechanism, the GS-Series converts linear piston motion into powerful, smooth, and efficient torque output, providing exceptional control and dependability across a wide range of operating pressures.

Built for severe industrial and oil & gas environments, the Bettis GS-Series actuator offers precise valve control, long-term reliability, and fail-safe hydraulic operation. Its modular design allows easy customization and integration with control accessories, while its robust, corrosion-resistant construction ensures maximum durability and protection against harsh weather and corrosive media.

The Bettis GS-Series is available in both spring-return (single-acting) and double-acting configurations, providing fail-safe operation and consistent torque delivery for critical applications such as pipeline isolation, emergency shutdown (ESD) systems, and process control valves.

Technical Specification of Bettis GS-Series Scotch Yoke Hydraulic Valve Actuator

Power Source

Hydraulic

Product Type

Hydraulic Actuator

Actuation

Double-acting

Certifications

Enclosure Sealed( specific IP rating available upon request)

RoHS Statement

This product is only intended for use in large-scale fixed installations excluded from the scope of Directive 2011/65/EU on the restriction of the use of certain hazardous substances in electrical and electronic equipment (RoHS 2).

Control Type

On/Off, ESD

Valve Type

Ball, butterfly, and plug valves, louvers and dampers, and other quarter-turn mechanisms

Operating Temperature

Standard -40°C to + 66°C (-40°F to +150°F)

Torque/Thrust

Double-acting models: 1420 to 678,000 Nm (12,581 – 6,000,000 in-lbs)

Operating Pressure

Up to 40-220 psig (3-14 bar)

Feature of Bettis GS-Series Scotch Yoke Hydraulic Valve Actuator

• Over fifteen alerts and alarms to help alert users of abnormalities in the system
• Backed by a five-year material and workmanship warranty
• Patented Tension-lok device positively locks the spring module to allow its safe removal and installation, eliminating accidental release of the spring force
• PED 97/23/EC compliant to meet the stringent requirements of pressure mounting vessels
• Meets both IP66 and IP67M specifications for submergence and high pressure water deluge test and offers superior water ingress and corrosion protection
• Offers multiple configurations, with a modular design that enables safe field maintenance and reduced inventory costs
• Interchangeable power and spring modules for quick reversal of the fail-safe mode
• Suitable for use in demanding applications requiring SIL environment
• Adds an extra measure of versatility with its field serviceable modular configuration. It can be altered from a single acting to a double-acting and add a hydraulic manual override after installation
• Offers a variety of mechanical and manual overrides for G-Series models
• Offers complete valve operating system (VOS) for final valve control by combining the G-Series actuator, controls and a valve in a singular system