| 摘要 |
An outwardly operable valve component is provided with an operating section (43) and has a valve piston (30) which works in conjunction with a valve seat (35). A spring device (39) is provided in the valve chamber or bore (25), which permanently activates the valve component in its closed position against the ruling fluid pressure. - - LThe valve piston is blunt-conically formed and by finger pressure on the operating section can be moved out of its closed position, whereby pressure equilibrium is adjusted in the valve chamber and the piston by finger pressure in each arbitrary position of its movement path is displaceable by overcoming the opposing spring force of the spring device. |
