Low Torque Gate Valve Mechanism
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Sep 11, 2008
app pub date -
Mar 4, 2008
filing date -
Mar 5, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A gate valve apparatus provides a manually operated gate valve with an operation mechanism that reduces the force required to actuate the gate valve and minimizes the number of handwheel turns required. Disclosed is a gate valve apparatus including a valve body, a bonnet, a gate, a ball screw arrangement, a gear reducer arrangement and a handwheel. The ball screw arrangement, gear reducer arrangement, and the handwheel are associated with the valve stem and gate such that rotational force applied to the handwheel is converted by the gear reducer arrangement and the ball screw arrangement into linear force applied to the valve stem and then to the gate.
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