| 摘要 |
<p>A throttle valve having a valve seat element with a coaxial jacket which has a plurality of flow-through channels positioned at different planes, and a piston-like locking member is stroke displaceably disposed within the jacket and having a sealing face at its front surface which cooperates with a first valve seat. The jacket is surrounded by a second stroke displaceably disposed locking element having a sealing face at its front surface opposite to the valve seat element, which cooperates with a second valve seat, mounted on the valve seat body, both locking elements being connected with each other for stroke movement.</p> |
