A valve which allows for two-directional flow comprises a housing defining an axial flow channel; a flow control body disposed within the axial flow channel, the flow control body having a recess for receiving flow impact surfaces which allow for two directional flow; a closure member disposed within the axial flow channel; and drive means for displacing the closure member in an axial direction for selectively sealing and unsealing the drive means on the flow control body.
[ I claim:] [1.] A valve which allows for two-direction flow comprises:a housing, said housing defining an axial flow channel and a cylinder chamber wherein the cylinder chamber is a lateral extension of the axial flow channel;a reciprocal hollow closure member disposed within said axial flow channel, said closure member having piston means mounted thereon and received in said cylinder chamber for reciprocating said closure member;seal means mounted on said housing defining said axial flow channel on either side of said cylinder chamber for sealingly mou...
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