Fluid handling – With indicator – register – recorder – alarm or inspection means – Position or extent of motion indicator
Patent
1987-04-15
1988-11-08
Rivell, John
Fluid handling
With indicator, register, recorder, alarm or inspection means
Position or extent of motion indicator
25112911, 251251, 251263, 251285, 251360, 251903, F16K 3700, F16K 31524
Patent
active
047828560
ABSTRACT:
A modulating flow control valve comprising a central valve body with a tubular body member detachably supported at an inlet port thereof and providing a valve seat; a plug member is detachably supported in an access bore of the central valve body; and a valve stem, biased toward the valve seat, is extensive through a bore in the plug member. A valve seating member is supportable by a spring stop portion of the valve stem, and with spring biasing of the valve stem, is urged in restricting or sealing relationship with the valve seat, the valve seating member having a valve seating portion of a selected diameter to permit a predetermined maximum flow rate through the valve seat. A stem modulator assembly is provided to move the valve stem in response to a characterizing linkage assembly. Valve setting is provided by an indicia plate and an indicator pin supported by the valve stem.
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Gordon-Piatt Energy Group, Inc.
McCarthy Bill D.
Rivell John
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