Fluid handling – Systems – Flow path with serial valves and/or closures
Patent
1995-08-30
1996-08-27
Walton, George L.
Fluid handling
Systems
Flow path with serial valves and/or closures
1375133, 13751625, 251175, 251205, 251228, 25131501, 25131516, F16K 114, F16K 116, F16K 1504
Patent
active
055491359
ABSTRACT:
A ball valve disclosed herein is low cost and offers a fast and reliable valve operation. Furthermore, the actuating force the ball valve requires, when it is shut off, is small. The ball valve is capable of fine adjustment of the flow. The ball valve comprises a valve casing defining a flow path of a fluid, a valve seat disposed in the midway of the flow path, a valve element which is in engagement with the valve seat or out of engagement with the valve seat, to shut off the flow path or to regulate the flow rate in the flow path, a control rod inserted into the valve casing and movable upward and downward, and a connecting rod, one end of which is rotatably supported at the inner end of the control rod, and the other end of which is connected to the valve element. The valve element comprises a communication path which communicates with both the upstream side of the flow path and the downstream side of the flow path and an on-off means for opening or closing the communication path.
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Taimei Kinzoku Kogyo Co., Ltd.
Walton George L.
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