Fluid handling – With indicator – register – recorder – alarm or inspection means – Fluid pressure responsive indicator – recorder or alarm
Patent
1997-07-01
1998-08-25
Chambers, A. Michael
Fluid handling
With indicator, register, recorder, alarm or inspection means
Fluid pressure responsive indicator, recorder or alarm
137312, 2513352, F16K 3700
Patent
active
057974284
ABSTRACT:
A valve unit to control the flow of high-pressure fluid comprising a housing having a fluid inlet and a fluid outlet; a flow port in the housing communicating between the inlet and outlet, and a seat about the flow port; stem structure in the housing, and a stopper carried by the stem structure to be moved therewith toward and away from the seat; a stack of metallic diaphragms connected to the stem structure and to the housing, to flex and seal off therebetween as the stem structure moves, there being a flow chamber in the housing at one side of the diaphragms, and a control chamber in the housing at the opposite side of the diaphragms; control structure carried by the housing and extending into the control chamber to effect the movement of the stem structure, the control structure being movable relative to the housing; and signal structure carried by the housing to signal presence or absence of pressurized fluid leakage from the flow chamber, and from the control chamber.
REFERENCES:
patent: 4171792 (1979-10-01), Bass
patent: 4203467 (1980-05-01), Cardi
patent: 4760990 (1988-08-01), Kerger et al.
patent: 4840195 (1989-06-01), Zabrenski
patent: 4874007 (1989-10-01), Taylor
patent: 5048554 (1991-09-01), Kremer
patent: 5170659 (1992-12-01), Kerger et al.
patent: 5203370 (1993-04-01), Block et al.
Chambers A. Michael
Haefliger William W.
Vemco Corporation
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