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Pressure control valves

Main type: HR:Relief valve
               HT:Pilot-operated relief valve
               HRD:Relief valve with solenoid-operated directional control valve
               HRU:Unloading relief valve
               HG:Pressure reducing valve
               HQ:Sequence valve, unloading valve
               HU:Sequence valve, unloading valve
               HB:Sequence valve with check valve, Counterbalance valve with check valve
               HR-HKT:Brake valve
               HR-HKG:Brake valve
               HGR:Balancing valve


Relief valve
HR*

FEATURES
  1. The balancing piston type design offers excellent pressure - flow characteristics, minimizes variation from the set pressure, and ensures accurate operation.
  2. The valve allows configuration of an unload circuit by using a vent port (VE).
    It also enables remote control of pressure by connecting a pilot relief valve.
69kb PDF0405kb

Pilot-operated relief valve
HT3

FEATURES

The pilot-operated relief valve is mainly used for remote control of the main circuit pressure by connecting it to the vent port (VE) of a balancing piston type relief valve. In a small-flow circuit, this type of valve can also be used as a direct acting type relief valve.

13kb PDF0055kb

Relief valve with solenoid-operated directional control valve
HRD3

FEATURES
  1. Since an oil-immersed solenoid is used the plunger operates in the fluid, alleviating knocking sounds and ensuring quiet valve operation.
  2. External oil leakage is eliminated, even after a long time in use, since the valve has no sliding seal parts.
  3. Wiring work is simplified.
  4. Dust- and water-proof levels are IP65 in accordance with IEC standards.
  5. A grounding terminal is standard (AC only).
  6. Permissible back pressure considerably increased.
  7. A shockless valve that reduces the surge pressure generated at unloading is standard.
  8. Surge killer is standard.
  9. CE compatible product
174kb PDF0663kb

Unloading relief valve
HRU3

FEATURES

This type of valve consists of a balancing piston type unloading valve and a check valve assembled in one housing and is mainly used in accumulator circuits and circuits in which two levels of pressure (low-pressure large-volume circuit and high-pressure small-volume circuit) are handled.

PDF0164kb

Pressure reducing valve
HG*

FEATURES
  1. This valve allows the setting of a low pressure and stably maintains this pressure at the set level.
  2. The direct acting type valve ens ures a quick response and generates virtually no surge pressure.
104kb PDF0442kb

Sequence valve, unloading valve
HQ*, HU*

FEATURES

This type of valve is used to control the operating sequence of the hydraulic circuit (sequence operation) or to relieve the pump pressure from the loaded state to the unloaded state (unloading operation).

54kb PDF0295kb

Sequence valve with check valve, Counterbalance valve with check valve
HQ*, HB*

FEATURES

These valves are used to control the operating sequence of the hydraulic circuit (sequence operation) by controlling the pilot pressure, to hold the load, or to prevent a device from falling under its own weight (counterbalance operation).

PDF0327kb

Brake valve
HR-HKT*, HR-HKG*

FEATURES
  1. One brake valve unit can apply a brake in both the acceleration and deceleration stages.
  2. The braking performance can be adjusted by adjusting the setting pressure.
97kb PDF0178kb

Balancing valve
HGR2

FEATURES
  1. Using this type of valve, the hydraulic system can be designed compactly and installation space can be reduced.
  2. The pressure can be adjusted easily with a single handle operation.
  3. The valve is compact and light.
36kb PDF0144kb

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