Bettis RPE-Series Pneumatic Rack and Pinion Valve Actuator
The Bettis RPE-series is a rack & pinion actuator, available in 12 sizes as spring return or double acting models. The actuators have a tough and reliable design and are intended to operate quarter turn valves or any other quarter turn application. The Bettis RPE-series comes with coated body and endcaps, has a special high corrosion resistant aluminum pinion design and has stainless steel fasteners, resulting in a long lasting durable actuator design
The Bettis RPE-Series Pneumatic Rack and Pinion Valve Actuator is a compact, high-performance rotary actuator designed to provide precise, reliable quarter-turn motion for a wide range of industrial valve applications. Developed by Emerson, the RPE-Series offers a powerful, efficient, and cost-effective solution for on/off and modulating control of ball, butterfly, and plug valves across various process industries. The RPE-Series utilizes a rack and pinion mechanism, converting pneumatic energy into smooth rotary motion with high torque output and consistent performance throughout the stroke. This design ensures accurate valve positioning, minimal hysteresis, and long operating life, even under high-cycle or harsh process conditions. Available in both double-acting and spring-return (fail-safe) configurations, the RPE-Series provides flexible control options for systems requiring fail-open or fail-close operation during air supply loss. The actuator’s extruded aluminum body is treated with a hard anodized finish for superior corrosion resistance, while its stainless steel fasteners and sealing system ensure dependable operation in demanding environments. With ISO 5211 and NAMUR mounting interfaces, the Bettis RPE-Series is easy to install, integrates seamlessly with limit switches and positioners, and is suitable for manual override or remote control configurations.
Technical Specification of Bettis RPE-Series Pneumatic Rack and Pinion Valve Actuator
- Power Source
- Pneumatic
- Product Type
- Pneumatic Rack and Pinion Actuator
- Actuation
- Double-acting, Spring-return, Quarter-turn
- Certifications
- ROHS3, REACH, ATEX, PED and Machinery Directives, SIL3, IP66/67
- Control Type
- On/Off, Positioning, Modulating, ESD
- Valve Type
- Ball, butterfly, plug and any other quarter turn application
- Operating Temperature
- Standard -20°C to +80°C (-4°F to +176°F). Optional high and low temperature options
- Torque
- 12 sizes: 12 to 4100 Nm (106 to 36,474 lbf.in)
- Operating Pressure
- up to 8.3 bar / 120 psi
Feature of Bettis RPE-Series Pneumatic Rack and Pinion Valve Actuator
- Heavy duty body castings provide maximum protection in the harsh environment of process plant locations.
- Polyurethane powder coating provides excellent corrosion resistance on housing and end caps.
- One piece blow-out proof, pressure balanced, pinion allows safe in-field re-configuration from Fail-Close to Fail-Open.
- The aerospace type alloy 7075 T6 for the pinion, provides the best combination of corrosion resistance, high strength and a lightweight construction as well as providing protection against galvanic corrosion.
- Precision dual stroke adjustment provides accurate and intuitive end of stroke adjustment for the Open and Closed valve position.
- Low maintenance bearings for pistons and pinion.
- Accurately designed and machined components assure a perfect fit and long cycle life.
- Stainless steel or Deltatone™ coated fasteners.
- VDI/VDE 3845 (NAMUR) solenoid interface and top accessory interface.
- Dual ISO 5211 mounting patterns allow low-profile direct mounting to valves.
- Drive inserts on the valve flange make direct mounting flexible, either for square, flat head, or round with key way stems.