Offering the most economical solution when valve torque requirements are more or less constant throughout the stroke.
They are available in three main types - the RP, RH Series; and R Range.
RP/RH Range Overview
- RP (pneumatic) and RH (hydraulic) Range rack and pinion actuators are designed to provide a rotary, quarter-turn movement for either on/off or modulating duty. They are particularly well suited for applications where the valve torque demand is relatively uniform throughout the stroke.
Five body sizes produce torque output up to 3,500 Nm (30,000 inch pounds) at operating pressures up to 12 bar (174psi) for RP and 230 bar (3,300 psi) for RH. They are available in either double acting or spring return configurations.
R Range Overview
- Rotork R Range rack and pinion actuators satisfy a wide range of industrial and process applications. They feature a durable, compact twin rack design and are pre-lubricated for life.
- The range is manufactured in eleven different body sizes providing up to 4,200 Nm (36,600 inch pounds) of torque at a maximum operating pressure of 8 bar (116 psi) and is available in both double acting and spring return configurations. They provide 90° of rotation with a constant torque output throughout the stroke.
"Zero failures" for power station's electro-hydraulic control valve solution