Fluid handling – Systems – Flow path with serial valves and/or closures
Patent
1994-05-11
1995-09-19
Chambers, A. Michael
Fluid handling
Systems
Flow path with serial valves and/or closures
137312, 137557, 137559, 25112916, 25112921, F16K 3700
Patent
active
054508762
ABSTRACT:
An electro-magnetically actuated twin-valve system wherein the respective valves are series-connected within a single housing and in a single generally axial line of fluid flow from an upstream or inlet end to a downstream or outlet end, and wherein an annular electrical winding is operative to concurrently operate both valves for a like change of state in each valve. A generally toroidal configuration of magnetic-core elements is provided by generally cylindrical housing structure which includes annular end-closure elements and wherein the core path is completed by magnetic armature and pole-face features. The annular winding is magnetically coupled to the armatures and is contained within the generally toroidal configuration of magnetic-core elements. Separate springs axially preload the armatures in their valve-closed direction of engagement with annular valve-seat formations along the path of flow. And provision is made for independent testing of the sealing effectiveness of each valve closure, prior to operation of the twin-valve system.
REFERENCES:
patent: 3462116 (1969-08-01), Wright, Jr.
patent: 4575005 (1986-03-01), Giraudi
patent: 4653525 (1987-03-01), Young
patent: 5170659 (1992-12-01), Kemp
patent: 5199459 (1993-04-01), Mullally
Chambers A. Michael
Marotta Scientific Controls, Inc.
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