Device and method for operating at least two valves
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United States of America Patent
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-
Apr 5, 2005
Grant Date -
Oct 23, 2003
app pub date -
May 19, 2003
filing date -
Nov 20, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A valve device and a method for operating at least two valves is actuated by an actuator and arranged for controlling fluid flow in at least two separate fluid lines. The two valves are preferably diaphragm operated valves, but may be also piston valves. The valve device includes a pressure release mechanism constructed to change pressure in a diaphragm chamber of each diaphragm operated valve and thereby open or close the valve. The pressure release mechanism may include a fluid passage in communication with each diaphragm chamber, where it is simultaneously controlled by a movement of a single sealing member actuated by a single actuator. The valve device may also include a manual actuator.
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