Inverse Proportional Pressure Relief Cartridge Valve series DVSA-1LG
Zawór nabojowy przelewowy DVSA-1LG Bucher
Pressure relief cartridge valves

Inverse Proportional Pressure Relief Cartridge Valve series DVSA-1LG

Pressure [bar]


Flow rate [L/min]


Inverse proportional pressure relief cartridge valves series DVSA-1LG…  are pilot valves with a falling pressure/current characteristic. They are nominal size 1 seat valves with a 3/4-16 UNF mounting thread. These direct acting screw-in cartridges control pressure in response to an electrical demand signal, enabling the maximum system pressure to be varied continuously and set at any desired level. When the solenoid is de-energised (initial position), the relief pressure is the nominal pressure of the applicable pressure range (fail-safe function). Any pressure at port 1 is additive to the valve setting at port 2, therefore port 1 should preferably be connected directly to tank. In control mode, the relief pressure is inversely proportional to the change in the required value (amplifier output current). In order to obtain precise pressure settings over the whole of the required pressure range (optimum resolution), the pressure relief cartridges are available in 5 pressure ranges. If a proportional solenoid is faulty, for example, the integral manual pressure setting enables the required pressure to be set mechanically.

  •  Can be used as a pilot valve
  • Compact construction for cavity type AL – 3/4-16 UNF
  • Operated by a proportional solenoid
  • Nominal pressure when solenoid de-energised (fail-safe function)
  • 5 pressure ranges available
  • All exposed parts with zinc-nickel plating
  • High pressure wet-armature solenoids
  • The slip-on coil can be rotated, and it can be replaced without opening the hydraulic envelope
  • Various plug-connector systems and voltages are available
  • With integral manual pressure setting
  • Can be fitted in a line-mounting body
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