Rotork CMA compact modulating electric actuator for valves and metering pumps, 4–20 mA

Rotork CMA is a range of compact electric actuators for precise positioning and continuous modulation of control valves, dosing and metering pumps where accuracy and repeatability matter and space is limited.

Linear output — seating thrust up to 20 kN (4,500 lbf); part-turn — up to 395 Nm (3,500 lbf·in); multi-turn — up to 28 Nm (250 lbf·in). Loop-powered 4–20 mA feedback and configurable ESD input: open, close or stay put on emergency.

The actuator is an alternative to pneumatics where compressed air is unavailable and accuracy and simple electrical installation are required.

Key features:

• Linear output up to 20 kN
• Part-turn up to 395 Nm, multi-turn up to 28 Nm
• Loop-powered 4–20 mA feedback
• Configurable ESD input
• Compact mounting on valves and metering pumps

Specifications:

• Type: compact electric modulating
• Linear output: up to 20 kN (4,500 lbf)
• Part-turn output: up to 395 Nm (3,500 lbf·in)
• Multi-turn output: up to 28 Nm (250 lbf·in)
• Duty: continuous modulation, precise positioning
• Interfaces: 4–20 mA, ESD input (open / close / stay put)

Application: Control valves, dosing and metering pumps in HVAC and process applications.

Scope of supply: CMA actuator with selected output; valve mounting kit on order.

Before ordering: Before ordering, specify output type, stroke, thrust or torque and control signal for the specific valve.