Valve e.g. spool-type servo-controlled valve used in fluid system, has valve piston portion that is guided against force of spring element toward power port for partially blocking fluid connection of supply terminal to power port

摘要

The valve (10) has a valve piston (14) that is provided with two valve piston portions (37,38). The valve piston portions are connected over a spring element (40) such that the valve piston portion (37) is guided against spring element force toward a power port (A) for partially blocking fluid connection of a supply terminal (P) to power port, when fluid stream is more than a given volumetric flow. The valve piston portion (37) is conductibly guided back to the valve piston portion (38) by spring element force, when the fluid stream falls below the given volumetric flow.