Hemiwedge Valve Corp. introduces the Hemiwedge® cartridge valve with a new mechanical seal. The valve incorporates some aspects of ball, gate and even triple-offset butterfly valves to protect the sealing surface during valve operation. A tapered hemispherical closure member (the hemi) rotates around a fixed core and wedges into a fixed seat to affect a mechanical seal. The closure member is rotated a quarter-turn by a valve stem, operated manually with a wrench or gear operator, or automatically with a pneumatic, hydraulic or electric actuator. The valve is also highlighted by: ?
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