Parker E6B060ZN409 Standard Pilot Vented Load Control Valve Cartridge - 180LPM

Parker E6B060ZN409 Standard Pilot Vented Load Control Valve Cartridge - 180LPM

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Parker Load Control Valve

Threaded cartridge valve used to control loads due to hose or tube failure, or because of a runaway load caused by an over center cylinder condition or lowering of a load.

Technical Specifications

  • Maximum Flow Rate: 48 GAL/MIN, 180 L/MIN
  • Pilot Pressure Ratio: 3:1
  • Adjustment Mechanism: Screw
  • Mounting Type: Threaded Cartridge Valve
  • Holding Pressure: 3120 PSI, 215 BAR
  • Pressure Control Range: 725-5000 PSI, 50-350 BAR
  • Port Size: N/A
  • Seal Material: Nitrile
  • Division: Mobile Systems Division Europe
  • Maximum Flow Rate: 48 Gal/min, 180 L/min
  • Mounting Type: Threaded Cartridge Valve, Threaded Cartridge Valve
  • Flow Rate: 48 Gal/min, 180 L/min, 48 Gal/min, 180 L/min
  • Pilot Pressure Ratio: 3:1, 3:01
  • Adjustment Mechanism: Screw, Screw Adjustment
  • Maximum Inlet Pressure Rating: 5000 psi, 350 bar, 5000 psi, 350 bar
  • Holding Pressure: 3120 psi, 215 bar, 3120 psi, 215 bar
  • Pilot Location: External, External
  • Pressure Control Range: 725-5000 psi, 50-350 bar, 725-5000 psi, 50-350 bar
  • Port Size: N/A
  • Seal Material: Nitrile, Nitrile
  • Pressure Control Sensitivity: 725 per turn psi, 50 per turn bar, 725 per turn psi, 50 per turn bar
  • Maximum Operating Pressure: 5000 psi, 350 bar
  • Port Thread Size: N/A
  • Leak Rate: 6 @ 1450 PSI (100 BAR) drops/min, 6 @ 1450 PSI (100 BAR) drops/min
  • Cavity Size: 3C, 3C
  • Operating Temperature: -30° to +250° °F, -34° to +121° °C, -30 to +250 °F, -34 to +121 °C
  • Function: Counterbalance Valve
  • Actuation Type: Pilot Operated, Vented
  • Valve Material: All parts steel. All operating parts hardened steel, All parts steel. All operating parts hardened steel
  • Body Material: N/A, N/A
  • Maximum Kinematic Viscosity: Mineral-based or synthetic with lubricating properties at viscosities of 45-2000 SSU (6 to 420 cSt) cSt, 45-2000 SSU (6 to 420 cSt)
  • Flow Direction: Cylinder port 1, Valve port 2, Pilot port 3
  • Filter Efficiency Rating: ISO 4406:1999 Code 18/16/13, ISO 4406 18/16/13, SAE Class 4
  • Weight: 1.17 lb, 0.53 kg
  • Installation Torque: 85 Nm, 63 lb-ft, 63 lb-ft, 85 Nm
  • For Fluid Type: Mineral-based or synthetic hydraulic fluids
  • Maximum Operating Temperature: +250 °F, +121 °C
  • Minimum Operating Temperature: -30 °F, -34 °C

Parker’s counterbalance, or load control, valves are available either vented, or non-vented style. The vented valves are available in flow ranges from 5 gallons per minute up to 48 gallons per minute, and pressures up to 5000 psi. Typical uses of these valves are in applications where: Loads are lowered and a smooth operation is required to prevent a runaway condition, Loads are handled using a cylinder operating in an over center condition, Load drift needs to be eliminated due to control valve spool leakage. Sizing a counterbalance valve needs care in that the flow required is usually higher than system pump flow, as in the case with a cylinder application (retract flow could be twice the system flow). Over sizing the valve could cause instability. When the pressure setting is critical, a vented load control is preferred. Pressure in the spring chamber of the valve is vented to atmosphere and therefore independent of any back pressure from the tank line. The pilot ratio is the ratio of the pilot area versus the differential area poppet. Thus, the higher the pilot ratio, the less pressure that is needed to assist the load pressure in unseating the poppet. This means there is less restriction to the overrunning load, resulting in less horsepower required and more control of the load. So higher pilot ratio equates to less restriction to the overrunning load, less control and less horsepower required. Lower ratio equates to more restriction to the overrunning load, more control and more horsepower required. The pilot ratio decision is one of Horsepower versus Control. For reference the most popular ratio is 6:1. Parker offers counterbalance valves with adjustable and non-adjustable pressure settings. Non-adjustable, or shimmed version, is recommended for most applications as it prevents tampering or improper adjustment by uneducated users.