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Hydraulics

RDH082 Direct Acting Relief Valves

Series RDH082 is a direct acting, poppet-type relief valve that has a fast response, spherical poppets for low leakage, and an internal mechanical stop limits poppet travel eliminating spring solidification. All external parts are zinc plated.

  • Specifications
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    Mechanical

    Dimensions 105.6 mm (max. height) -
    Rated Flow 30 LPM (8 GPM) -
    Maximum Inlet Pressure 380 bar (5,500 psi) -
    Maximum Pressure Setting 350 bar (5,000 psi) -
    Sensitivity: Pressure/Turn 15 - 19.3 bar (280 psi) 30 - 35 bar (508 psi)
    50 - 54 bar (787 psi) -
    Reseat Pressure 85% of crack pressure -
    Leakage at 150 SSU (32 cSt) 5 drops/min. (0.33 cc/min.) at 75% of crack pressure
    Cartridge Material All parts steel. All operating parts hardened steel. -
    Fluid Compatibility/Viscosity Mineral-based or synthetic with lubricating properties at viscosities of 45 to 2,000 SSU 6 to 420 cSt
    Filtration ISO-4406 18/16/13, SAE Class 4 -
    Weight (Approximate) 0.18 kg (0.40 lbs) -
    Cavity C08-2 -
    Form Tool Rougher: None Finisher: NFT08-2F

    Environmental

    Operating Temperature Range/Seals -45°C to +132°C ("D"-Ring) -50°F to +270°F
    -34°C to +121°C (Nitrile) -30°F to +250°F
    -26°C to +204°C (Fluorocarbon) -15°F to +400°F
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