Proportional Pressure Relief Cartridge Valve series DVSA-1L

Proportional pressure relief cartridges, series DVSA-1L…, are size 1 pilot valves featuring a seat valve design and a 3/4-16 UNF mounting thread. With these pressure-relief cartridges, the relief pressure is dependent on the electrical control signal and can be continuously varied. When the solenoid is de-energised (initial position), connection 2 → 1 is open and the minimum pressure (free flow) depends on the flow rate. 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 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 five pressure levels. These proportional pressure-relief cartridges are primarily used as pilot valves, mainly in mobile and industrial applications to allow a pressure in hydraulic installations to be limited electro proportionally.