Throttling gasket insert for use with knife gate valve
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United States of America Patent
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-
Jan 17, 1989
Grant Date -
N/A
app pub date -
May 20, 1987
filing date -
May 20, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A throttling gasket insert (34) for attaching a knife gate valve (10) into a pipe string is constructed of a single piece of resilient gasket material having a washer-shaped flange portion (36), to be clamped between a facing surface (52) of a knifegate-valve face plate (26) and a pipe flange (60), and a tubular portion (42), extending through a knife-gate valve flow passage (22) to a knife-gate blade (12) thereof, having a V-shaped passage therethrough.
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