Cowan Dynamics announces newly expanded brochure for E2HR Series

Cowan Dynamics is pleased to announce the release of their newly expanded brochure for the E2HR Series, Electro-Hydraulic Rotary Valve Actuator. The electro-hydraulic actuator combines the best of both worlds of electric actuators and hydraulic actuators for control valve automation.

The complete system is self-contained which eliminates the need for separated hydraulic power unit, simplifying the system construction and improving safety and reliability.

Using helical gear technology provides very high force-density and achieves the most compact solution to generate torque (comparing to rack & pinion and scotch yoke rotary actuators).

 The updated brochure provides engineers with:

  • Details on How to Configure Multiple E2HRTM Actuators
  • Mounting Flange Specifications & Dimensions
  • Bore Size / Motor / Torque / Speed Specifications
  • Easy How to Order Chart

Controlling Multiple E2HR Actuators

  • The E2HR control panel can be mounted remotely and control multiple valves thereby providing significant cost savings.
  • It is ideal for hazardous area locations and gives plant technicians the flexibility to mount the control panel in a safe zone.
  • Valve performance data for multiple valves can be accessed from a single control panel or access remotely.

Key Features of the E2HR Electro-hydraulic Rotary Actuator:

  • Torque up to 300,000 in-lb
  • Hydraulic Manual Override
  • Rotation: 90° +/- 5°
  • Speed 20°/Sec
  • ESD (Emergency Shut-down) Capable
  • Remote Diagnostics/Data logging
  • -50C to +40C Operating Temp.


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