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Pressure Controls

Cross Over Relief Valves

Typical application for the RVC is in a series circuit where a load on motor #2 causes back pressure on motor #1 and relief valve #1. Vent in port 2 of RV 1 allows spring to maintain proper load on motor #1 even though back pressure is present. Port 2 pressure into spring chamber to offset back pressure. Vent at port 2 causes .2 GPM flow from port 2 to port 1. Typical application for the RVB is in a parallel circuit where the load on motor #2 does not cause back pressure on motor #1. Relief valve maintains differential pressure across motor because one side of motor always goes to tank.

product details

  • 57 LPM (15 GPM) maximum oil flows.
  • 276 Bar (4000 PSI) Maximum oil pressure.
  • Various pressure adjustable pressure ranges.
  • Industry common cavities
  • Hardened parts for long life/low leakage.

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Direct Acting – Differential Area Relief Valves

Typical application for the RVA, RVD, RWA, RWD is to protect pump and system.
Typical application for the RCA and RCD is cross over relief to protect a motor in both directions.

product details

  • 19-57 LPM (5-15 GPM) maximum oil flows.
  • 207-276 Bar (300-4000 PSI) Maximum oil pressure.
  • Various pressure adjustable pressure ranges.
  • Industry common cavities.
  • Hardened parts for long life/low leakage.

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Pilot Operated Relief Valves

Typical application for the RVP and RWP is to protect pump or system.
Typical application for the RWR and RVR, is to be used as counterbalance in a system where positive hydraulic locking is not required. In this schematic positive locking is done using a P. O. check valve.

product details

  • 57-151 LPM (15-40 GPM) maximum oil flows.
  • 241-276 Bar (3500-4000 PSI) Maximum oil pressure.
  • Various pressure adjustable pressure ranges.
  • Industry common cavities.
  • Hardened parts for long life/low leakage.

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Pressure Compensated Regulator Valves

Typical applications for the these valves are in a proportional circuit to achieve pressure compensated flow control.

product details

  • 30-151 LPM (8-40 GPM) maximum oil flows
  • 280 Bar (4000 PSI) Maximum oil pressure
  • Various spring ranges/pressure settings
  • Industry common cavities
  • Hardened parts for long life/low leakage

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Pressure Reducing – Relieving Valves

Typical application for the PRP and PWP is multi-system pressure setting. System relief pressure must be greater than reduced pressure setting.

product details

  • 38-76 LPM (10-20 GPM) maximum oil flows
  • 207-280 Bar (3000-4000 PSI) Maximum oil pressure
  • Various spring ranges/pressure settings
  • Industry common cavities
  • Hardened parts for long life/low leakage

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Featured Case Study

Featured Case Study Falcon Equipment
As the power infrastructure ages, maintaining power lines is becoming more labor intensive and the need for increased productivity and higher levels of safety is ever increasing. BC Hydro required a control system that would be safe to operate in close proximity to high voltage power lines while they are still active... read more »