Allied Instrumentation

Damper Drives

Electraulic™ Power Modules

REXA Damper Drives can be configured to utilize a rack and pinion hydraulic cylinder or a double acting linear cylinder driven by one or more Electraulic™ Power Modules. Either configuration may be chosen to suit an application’s specific installation requirements. Our damper drives are commonly used on fan and stack dampers, burner tilts and other combustion control applications. REXA manufactures drive base and drive arm or mid/end pivot arrangement to suit any installation scenario.

Standard Features

Electraulic™ Power Module

  • The key components of the Power Module include a 100% duty cycle motor, bi-directional gear pump, and Flow Matching Valves. This simple and compact design features a closed-loop, positive pressure hydraulic system which eliminates the need for active reservoirs and filters

Display and Keypad

  • Simple, user-friendly push-button calibration. Displays mode of operation, current position, diagnostic warnings, and diagnostic alarms. A real-time clock provides event time and date stamping

Pressure Gauges and Bypass

  • Pressure Gauges - Provided as standard equipment, these color-coded pressure gauges are helpful with troubleshooting should a problem arise. The gauges connect to a manifold with internal valves which isolate the gauges during normal operation ensuring high reliability
  • Manual Bypass - An integral bypass is provided to equalize pressure on each side of the cylinder for use during installation and commissioning

Oil Level Indicator

  • The expansion chamber includes a large spring loaded volume indicator. Stainless steel material and an environmental seal ensure smooth operation. A “dip stick” style gauge eliminates guess work to ensure proper oil levels

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  • Product Features
  • Technical Specs

Benefits include:

  • Simple, user-friendly calibration
  • No routine maintenance
  • Fail-safe capable
  • Environmental rating: NEMA 4X (IP66)
  • Hazardous area rated: CSA/ATEX/IEC
  • Torques from 2500 to 1,500,000 in-lb (282 to 169,477N*m)
  • Rotations: 90°, 120°, 180° or 270°
  • Low and high temperature configurations available

What Allied Instrumentation Customers are Saying

Our customers need better support in instrumentation, safety, and heat tracing solutions, and we are proud to offer them access to a robust portfolio of market-leading product lines within our one company. Hear what they are saying about Allied Instrumentation.

Reliable and trusted supplier for years

Allied Instrumentation has been a reliable and trusted supplier to us for years. With their ability to supply a multitude of different instrumentation solutions, they have exceeded our expectations when selecting, programming, and consolidating instrumentation for both domestic and international projects.
- AI Customer

Easy and affordable

I Would like to comment on how easy it was to install the new Schubert & Salzer valves that replaced the bigger and heavier globe valves. The spool pieces provided by Shubert made this transition very easy and affordable.
- AI Customer

No calibration needed

Eight years later...no calibration needed! Yokogawa active digital pressure transmitters installed throughout the facility are still in service and have never needed any zero or span adjustment.
- AI Customer

Your team went above and beyond

I just wanted to let you know your team went above and beyond. I requested a replacement valve that needed to meet our new requirements. Dave and James produced a valve that met all my needs. Without the need for a pipe modification. Which will help us with keeping the down time of the equipment low. There was an issue that caused this valve to be needed by Wednesday. These two individuals jumped through hoops to make sure I will have the valve by Wednesday. They also have a backup valve option just in case. The hard work and reassurance helped me convey to my management that your team is crucial to our success. I appreciate everyone that helped.
- AI Customer

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