Valve Actuator(5 Products)
SIEMENS

Signal Type Electrical Connection Type Power Consumption Control Signal Cycle Time Torque Return Action Height Price
Proportional Cable 10 VA Proportional 30 sec. 285 lbs.-in. Spring Return 11.812" £1393.14
Proportional Cable 0.8 VA Proportional - - Non-Spring Return 3 7/8" RFQ
Floating Cable 0.8 VA Floating Point 150 sec. 45 lbs.-in. Non-Spring Return 3 7/8" £130.31
Proportional Terminal Block 2 VA Proportional - - Non-Spring Return 4 1/2" RFQ
Floating Terminal Block 0.8 VA Floating Point - - Spring Return 4 1/2" RFQ

Working Mechanism

  • These actuators have microprocessors for controlling the valve stroke length.
  • A zero voltage signal from the actuator retracts the stroke, returning the valve to the normal position.
  • No supply voltage to the actuator maintains the last position of the valve.
  • The manual positioning knob of the actuator should be returned to zero position and the actuator should be attached to the valve.
  • Attach the actuator wires to the terminal plug and insert the plug into the terminal connector.

Features

  • They have direct coupled universal bonnet for enabling installation without any tools.
  • They feature manual override that can be easily adjusted / positioned using a 3 mm hex wrench.
  • Siemens valve actuators have visual position indicators for indicating the actuator's current mode.
  • They provide two position / three position or 0 to 10 VDC control instantly with precision.
  • They have linear flow characteristics for easy programming and connection.
  • Selected models have spring return type operation which is fail safe, ensuring system and valve safety.

Frequently Asked Questions

Q. What do electronic valve actuators do?

A. They control the opening & closing of the valves and provide either rotary or linear motion.

Q. Are there any tool requirements for installing valve actuators?

A. Yes, users need a wire stripper and a small flat blade screwdriver for installing these valve actuators.

Q. What is the difference between spring return & non-spring return valve actuators?

A. Spring return valve actuators have a spring mechanism to control the valve position and operational state. Non-spring return valves have no such mechanism.

Q. How do valve positioners differ from control valves?

A. Valve positioners ensure that the valve has reached the needed degree of opening, whereas valve actuators move the valve's modulating element.

Q. Do these actuators require installation clearance?

A. Yes, the minimum access space recommendation is 8 inches beside the terminal plug and above the actuator.

Q. How can these actuators be mounted?

A. They can be mounted sideways and should not be mounted in the upside-down orientation.

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