Inverse Proportional Pressure Relief Cartridge Valve series DVPSA-3BG

Inverse proportional pressure relief valves series DVPSA-3BG… are size 16, two stage screw-in cartridges with a M42x2 mounting thread. They consist of a spool-type main stage and a leak-free, poppet-type pilot stage with a falling pressure/current characteristic. With these proportional pressure-relief cartridges, the relief pressure is dependent on the electrical control current and can be continuously va ried. When the solenoid is de-energised (initial position), the relief pressure is the nominal pressure of the applicable spring range (fail-safe function). Any pressure at port 3 is additive to the valve setting at the main port 1, therefore port 3 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 pres sure relief cartridges are available in five spring ranges.