Parker TDA025EW06B2VLW20 Proportional Throttle valve
Parker TDA025EW06B2VLW20 Proportional Throttle valve 2/2 way proportional throttle valve. Features Cavity and mounting pattern according to ISO 7368. Fail-safe function at power failure. Leak-free from port B to A. Pressure differential up to 350 Bar (5075 PSI) possible. Function The TDA valve has a 3-stage design consisting of the first solenoid operated pilot stage with a spool in sleeve design, the second pilot stage with the control spring and the sequence spool and as main stage the poppet in the sleeve. The proportional solenoid operates the pilot spool against the feedback of the control spring and controls the position of the sequence spool. The main poppet follows the position of the sequence spool and provides an open area for flow from B to A (optional A to B) in proportion to the solenoid current. The poppet is positioned independent of the differential pressure, which can become as high as the maximum working pressure. In combination with the digital power amplifier PCD00A-400 the valve parameters can be saved, changed and duplicated. More information:
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