Model

RBDALAN

Control
Adjustment Range
Seal Material

Model: RBDA

Bi-directional, direct-acting relief valve

Cavity: T-10A | Capacity:

Model

RBDALAN

Control
Adjustment Range
Seal Material

Technical specifications

The bi-directional, direct-acting relief cartridge is a normally closed, pressure-limiting valve used to protect hydraulic components from pressure transients. When the pressure differential between ports 1 and 2 exceeds the valve setting, the valve starts to open, throttling flow to limit the pressure rise, regardless of the direction.

  • Capacity from port 1 to port 2 is 25 GPM (95 L/min). Flow from port 2 to port 1 is rated at 10 GPM (40 L/min).
  • Recommended minimum setting is 1200 psi (85 bar). Note: At settings below 1200 psi (85 bar), the valve is rated for maximum transient flows of 25 GPM (95 L/min) only.
  • Because the modulating occurs inside the cartridge, these valves are immune to most of the problems associated with cavitation, namely noise and manifold erosion.
  • The seals on the adjust screw are exposed to system pressure which means this valve can only be adjusted when the pressure is removed. The setting procedure is; check the setting, remove the pressure, adjust the valve, check the new setting.
  • Valve is relatively insensitive to varying oil temperatures and oil borne contamination.
  • Select a spring range where the desired relief setting is approximately mid-range to high between the minimum and maximum pressure to ensure maximum valve repeatability.
  • Incorporates the Sun floating style construction to minimize the possibility of internal parts binding due to excessive installation torque and/or cavity/cartridge machining variations.
  • Cavity
  • Series
  • Capacity
    25 gpm
  • Maximum Operating Pressure
    5000 psi
  • Factory Pressure Settings Established at
    4 gpm
  • Maximum Valve Leakage at Reseat
    10 drops/min.
  • Response Time - Typical
    2 ms
  • Reseat
    >85% of setting
  • Hysteresis
    ≤ 3 %
  • Adjustment - No. of CW Turns from Min. to Max. setting
    5
  • Valve Hex Size
    7/8 in.
  • Valve Installation Torque
    30 - 35 lbf ft
  • Model Weight
    .40 lb
  • Seal kit - Cartridge
  • Seal kit - Cartridge
  • U.S. Patent #
    11,384,857

Model CAD Files

Files not yet avialable. Click below to request them.

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