Pilot Operated Ventable Relief Valves | #A04H3PZV


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A04H3PZV A04H3PZV

Pilot Operated Ventable Relief Valves | #A04H3PZV

REGIONAL - Parker’s pilot operated ventable relief valves offer the ability to control the pressure setting via internal adjustment or remote circuit; ideal in applications that require multiple settings up to 420 bar (6000 psi) and 400 lpm (106 gpm).


Technical Specifications

  • Flow Rate: 50 GAL/MIN, 190 L/MIN
  • Maximum Inlet Pressure Rating: 6000 PSI, 420 BAR
  • Pressure Control Range: 145-6000 PSI, 10-420 BAR
  • Adjustment Mechanism: Screw
  • Seal Material: Fluorocarbon
  • Division: Mobile Hydraulic Systems Division Europe
  • Flow Rate: 50 gal/min, 190 L/min
  • Maximum Inlet Pressure Rating: 6000 psi, 420 bar
  • Pressure Control Range: 145 to 6000 psi, 10 to 420 bar
  • Adjustment Mechanism: Screw
  • Seal Material: Fluorocarbon
  • Maximum Flow Rate: 50 gal/min, 190 L/min
  • Maximum Operating Pressure: 6000 psi, 420 bar
  • Maximum Tank Pressure: 6000 psi, 420 bar
  • Standard Setting Pressure: 2900 psi, 200 bar
  • Maximum Pressure Setting: 6000 psi, 420 bar
  • Pressure Control Sensitivity: 800 psi Per Turn, 55 bar Per Turn
  • Reseat Pressure: n/a
  • Actuation Type: Pressure Sensing
  • Configuration: Ventable Pressure Relief
  • Leak Rate: 25 cm3/min @ 1450 Psi (100 bar)
  • Mounting Type: Screw-in Cartridge
  • Cavity Size: C10-3S
  • Function: Pilot Operated
  • Operation Type: Automatic
  • For Fluid Type: Mineral-based Hydraulic Fluids, Synthetic Hydraulic Fluids
  • Maximum Kinematic Viscosity: 45-2000 SSU (6 to 420 cSt)
  • Filter Efficiency Rating: ISO 4406 18/16/13, SAE Class 4
  • Valve Material: Steel (all parts), Hardened Steel (all operating parts)
  • Installation Torque: 37 lb-ft, 50 Nm
  • Operating Temperature: -15 to 400 °F, -26 to 204 °C
  • Maximum Operating Temperature: 400 °F, 204 °C
  • Minimum Operating Temperature: -15 °F, -26 °C
  • Weight: 0.55 lb, 0.25 kg
  • Body Material: n/a
Safety Warning

Item Information

Ventable relief valves are pilot operated, spool type pressure controls. Like other pilot operated relief valves, the ventable relief has a main pilot spring chamber, and a bias spring chamber separated by a pilot orifice. The internal adjustment controls the main pilot spring setting. When pressure in the system builds above the setting of the main pilot setting, the pilot seat will lift allowing the spool to travel to the open position passing flow. What makes ventable relief valves unique is the valve offers an isolated vent chamber that is connected to the bias spring chamber. This allows for the valve to open at a lower pressure than the setting of the main spring. The circuit designer has the ability to apply an external control valve or valves to set the operating pressure of the bias spring that must be overcome to allow the valve to open. This is an ideal solution in applications that may require variable pressure settings in normal operation. One must consider the leakage component when applying any pilot operated spool type relief valve, as by design, the spool will pass a small leakage flow. Typical applications are in mobile & industrial equipment, where multiple pressure settings may be required. Applications such as press or lift circuits where multiple pressure settings may be required.

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CAD Drawings + Files

Part Number
A04H3PZV IGS STP

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Where to Buy

Local Contact

South Africa Headoffice

Parker Hannifin (Africa) Pty LTD

Sales Company South Africa

10 Berne Avenue

Aeroport

Kempton Park

Gauteng

South Africa

1620

Phone

0027 11 961 0700

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