Damper for press. valve closure - has piston with mushroom shaped body forming throttle with valve seat

摘要

The ressure valve has its closure component under spring pressure, the component opening through hydraulic pressure when a predetermined spring pressure is exceeded. The movements of the closure component are damped by a spring loaded piston working in conjunction with a gap of precise length and connected to a mushroom shaped body, the face side of which locates on the closure component. the damping piston (7) forms a composite unit with the mushroom shaped body (11), the hood-shaped head (12) of which has a length of less than 1 mm, forming with the surrounding valve seat (5) wall an effective throttle cross-section. This ensures a pressure drop of 10 bars with a tolerance of plus or minus 5 bars in relation to the max. flow.