Pneumatic valve actuator RPX

quarter-turnrack-and-piniondouble-acting

Product Description
The Bettis RPX-Series is a rack and pinion pneumatic actuator available in 13 sizes, offered as spring return or double acting models. It is designed to automate quarter-turn valves such as ball, butterfly and plug valves. The actuator features an extruded aluminium body, cast aluminium end caps and a powder-coated satin finish.

Key Features

• Corrosion resistance achieved with anodized housing, zinc-plated/chromated pinion, powder-coated end caps, chromated pistons and stainless steel fasteners.
• O-ring seals, low-friction piston and pinion bearing materials and grease provide low maintenance operation.
• Dual travel stops enable fine adjustment of open and closed positions.
• Nominal 90° rotation adjustable by +5° / -5° at each end of travel.
• Optional end cap stroke limiter available.
• Springs designed for extended cycle life; spring cartridges allow safe, rapid conversion to match torque and pressure requirements.
• Double rack and pinion design cancels side loads on the pinion shaft to minimize bearing wear.
• Bearings sized for reduced forces and longer cycle life.
• Complies with ATEX (2014/34/EU), PED (2014/68/EU) and Machinery Directives for industrial use.
• Flexible valve mounting with 2x ISO drilling patterns and Star Drive for ISO5211 and DIN3337 installations.
• Standard NAMUR (VDI/VDE3845) mounting for solenoid and top accessories.

Technical specifications

• Power Source: Pneumatic
• Product Type: Pneumatic Rack and Pinion Actuator
• Actuation: Quarter-turn, spring return or double acting
• Certifications: ATEX, PED and Machinery Directives
• Control Type: On/Off, Positioning, Modulating, ESD