Valve with compressible valve stem and valve body seals
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United States of America Patent
Stats
-
Dec 23, 1986
Grant Date -
N/A
app pub date -
Mar 7, 1986
filing date -
Mar 7, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A valve is provided with improved bonnet-stem and bonnet-valve body seals. Both non-metallic seals may be simultaneously compressed by threading the bonnet to the valve body, with a valve stem seal sandwiched between the bonnet and an axially movale retainer in engagement with the valve body. A jam nut threaded to the exterior of the bonnet may be periodically loosened, and the bonnet further threaded to the valve body to re-compress both seals and stop leakage from the valve. The concepts of the present invention are well adapted to providing a low cost valve suitable for handling corrosive fluids.
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