Valve and a pneumatic control valve non-rotatably joined by a coupling
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United States of America Patent
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-
Jul 11, 2000
Grant Date -
N/A
app pub date -
May 3, 1999
filing date -
Nov 7, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In a valve assembly (1) comprising a pressure medium operated valve (2) and a control unit (5) which is mounted on the end of the actuator (3,4) facing away from the valve (2), the control unit (5) comprises a pressure medium passage (17) having a first end for supplying a pressure medium. The control unit (5) is provided with a coupling (26,27) on the end facing the actuator for releasable connection with coupling members (25) on the actuator (3,4) at axial, non-rotational joining with the actuator (3,4). A second end of the pressure medium passage (17) ends in a branch (20) or opening for pressure medium tight connection with an opening (21) or a branch respectively in the actuator (3,4) at the joining. A usually closed valve member (18) is inserted into the pressure medium passage (17) and has a member (24) connected to the moveable part of the valve member and projecting through the control unit (5), the outer end of said member abutting the actuator (3,4) at the joining, whereby the valve member (18) is opened, for instance against the force from a spring or against differential pressure. As a result the control unit (5) can be mounted and dismounted by a plug-in connection at the same time as the valve member (18) is automatically opened and closed.
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