Direct acting relief valves of RD series are used to limit the pressure in a hydraulic system. No initial stage allows for a faster response to the increased pressure and results in better tolerance to oil contamination.

Maximum pressure 350 bar, maximum permissible flow from 95 to 760 lpm.

Order Codes

  • RD2A-T10A-LAN
  • ab  –  c  –  def
  • a.  Model name: RD;
  • b.  Valve size: 2A, 3A, 6A, 8A;
  • c.  Cavity type: T10A, T3A, T16A, T18A;
  • d.  Control manner: L: standard screw adjustment;
  • e.  Adjustable range: A: 35~210 bar, B: 20~105 bar, E: 7~315 bar, W: 70~315 bar;
  • f.  Sealing material: N: buna-N, V: viton.


Technical data

Direct Acting Relief ValvesRD2ARD3ARD6ARD8A
Cavity TypeT10AT3AT16AT18A
Maximum Flow [l/min]95200380760
Maximum Pressure [bar]350350350350
Tightening Torque [Nm]40/5060/70200/215465/500
Temperature range [°C]-35~100-35~100-35~100-35~100
Weight [kg]0,1550,2950,671,45

Performance Graph


Dimension TableRD2ARD3ARD6ARD8A
a [mm]39,748,761,979,4
b [mm]22,228,631,841,3
a  L [mm]616483100
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