RELIEF VALVE

RELIEF VALVE

RELIEF VALVE

RELIEF VALVE

RELIEF 100-300

REGIONAL - Parker’s direct acting relief valves are available in several cavity sizes and are designed for continuous duty applications with pressures up to 420 bar (6000 psi) and flows up to 200 lpm (53 gpm).
Availability: In stock
SKU
RD102S03
Lead Time
40
Parker’s selection of direct acting relief valves are fast acting and designed for continuous duty applications with pressures up to 420 bar (6000 psi) and flows up to 200 lpm (53 gpm) in a variety cavity sizes. The variety of pressure adjustment styles available makes these valves an economical solution for clipping pressure spikes and can handle up to full system flow if needed. Poppet style direct acting valves have low leak conditioned seats and are ideal port reliefs in cylinder control applications. Parker’s small, low flow, direct acting valves perform well when controlling pilot circuits or limiting load sense pressure.

Markets:
• Miscellaneous Industrial
• Miscellaneous Manufacturing
• Miscellaneous Mobile

Features/Benefits:
• Hardened, precision ground parts for durability
• Compact size for reduced space requirements
• Low leakage design poppet design available
• Fast response
• All external parts zinc plated
• High pressure (6000 psi) product available in some models
• Adjustable, fixed, or tamper resistant adjustments available
• Multiple spring ranges are available
• All valves are 100 % tested

Applications:
• Port/cross-port relief
• System relief
• Pilot and/or load sense relief
• Braking

Additional Technical Insight:
Full flow direct acting relief valves can be used as a main system relief valves in low flow circuits.  Direct acting valves are fast acting, therefore, these devices and can be an economical solution for clipping pressure spikes. Poppet style direct acting valves have low leak conditioned seats and are often used as a port relief in a cylinder control applications. Small, low flow, direct acting valves are ideal for controlling pilot circuits or limiting load sense pressure.
More Information
Maximum Operating Pressure 250 bar, 3600 psi
Division Hydraulic Systems Division
Maximum Operating Temperature +93 °C, +200 °F
Minimum Operating Temperature -35 °F, -37 °C
Body Material N/A
Seal Material D-ring (Standard)
Flow Rate 38 L/min, 10 gal/min
For Fluid Type Mineral-based or synthetic hydraulic fluids
Configuration Pressure Relief
Mounting Type Screw in cartridge valve
Pressure Control Range 50-300 psi, 3.5-20.7 bar
Maximum Inlet Pressure Rating 3600 psi, 250 bar
Maximum Tank Pressure 3000 psi, 210 bar
Maximum Flow Rate 38 L/min, 10 gal/min
Actuation Type Pressure Sensing
Installation Torque 37-41 lb-ft, 50-56 Nm
Pressure Control Sensitivity 2.7 per turn bar, 39 per turn psi
Valve Material All parts steel. All operating parts hardened steel.
Standard Setting Pressure 10.3 bar, 150 psi
Maximum Pressure Setting 300 psi, 20.7 bar
Filter Efficiency Rating ISO 4406 18/16/13, SAE Class 4
Maximum Kinematic Viscosity 45-2000 SSU (6 to 420 cSt)
Adjustment Mechanism Screw
Cavity Size C10-2
Operation Type Automatic
Function Direct Acting
Operating Temperature -35 to +200 °F, -37 to +93 °C
Leak Rate 5 @ 75% Crack Pressure drops/min, 0.33 @ 75% Crack Pressure cm3/min
Wire Mesh Screen Included N/A
Reseat Pressure 85% of pressure setting
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