Proportional Pressure Reducing Relieving Valve

A customer wanted to improve the performance of an off-highway vehicle by replacing the component that controlled the main stage of a hydraulic valve. Designed as a continuously variable, normally open valve, this proportional valve operated over various pressure ranges to optimize controllability.

Proportional Pressure Reducing-Relieving Valve

Typical Applications

  • Off-highway hydraulics
  • Auxiliary/PTO control
  • Turbo charger control
  • Variable valve timing
  • Transmission valves
  • Shift-by-wire control
  • Industrial controls
  • Oil pump controls

Features and Benefits

  • Compact design
  • Fast response
  • Low differential pressure in stand-by
  • Can be optimized for specific pressure ranges to optimize controllability.
  • Can be optimized to configure with customer electronic drivers.


Supply voltage 12 or 24 Vdc
Pressure hysteresis < 5%
Nominal linearity < 2%
Rated operating pressure 69 bar (1000 psi)
Rated control pressure 0-31 bar (0-450 psi) as needed
Operating temperature range -30 to 120°C
Command step response < 60 ms
Pressure step response < 3 ms

* All TLX components are customized to fit system requirements, meaning technical specifications are unique to each customer and design, and the examples given here are for illustration purposes only.

Quality Policy

TLX Technologies, LLC will consistently provide products that meet or exceed the requirements of our customers. The company complies with all of the requirements of the ISO 9001:2015 Quality Management System Standard. We will establish, monitor and work to continuously improve customer satisfaction, technology, productivity, quality and employee engagement.