Fluid handling – Line condition change responsive valves – With separate connected fluid reactor surface
Patent
1992-06-29
1993-08-10
Hepperle, Stephen M.
Fluid handling
Line condition change responsive valves
With separate connected fluid reactor surface
137375, 13750542, 251 86, G05D 1604
Patent
active
052340260
ABSTRACT:
The pressure reducing regulator includes a balanced valve arrangement, a sensor being resiliently urged toward a valve seat. A sensor insert is mounted by the sensor for axial movement therewith, the insert mounting the valve stem for movement therewtih between an open and a closed position and limited swivel movement relative thereto to form a more positive fluid seal with the valve seat. The valve stem extends through the valve seat. When the pressure decreases in the variable pressure chamber that is axially between the valve seat and the sensor, the sensor, and accordingly the valve stem is resiliently moved to its open position to allow fluid flow thereinto from the regulator inlet. A relatively weak spring and the inlet pressure in the pressure chamber act to result in the valve stem being moved to its closed position against the above mentioned resilient urging when the outlet pressure is at its desired level.
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patent: 4693267 (1987-09-01), Patterson
patent: 5033505 (1991-07-01), Eidsmore
Hepperle Stephen M.
Johnson Clayton R.
Tescom Corporation
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