Valves and valve actuation – Tube compressors – Perpendicularly reciprocating tube contacting element
Patent
1992-06-09
1993-05-04
Schwadron, Martin P.
Valves and valve actuation
Tube compressors
Perpendicularly reciprocating tube contacting element
251 4, 137551, 324716, 324557, F16K 706, G01R 2700
Patent
active
052074099
ABSTRACT:
An interchangeable pinch valve system (10) is provided with a valve body (20) having a longitudinal dimension which is substantially identical to standard longitudinal dimensions for ball, gate and the like type valves of similar flow path diameter. The reduced longitudinal dimension of pinch valve system (10), as compared to prior art systems, is achieved by a flexible-walled tubular sleeve (50) having a pair of transversely directed folds (60, 62) which provide sufficient sleeve material to enable the pinch closing of the flow passage (52) without substantially stretching the tubular sleeve wall (51). The valve body 20 is provided with a pair of recessed openings (22, 24) formed in the interior of valve body wall (21) in parallel spaced relation transverse to the fluid flow axis of the valve for receipt of the respective folds (62, 60), whereby the tubular sleeve (50) is in contiguous contact with the interior surface of valve body wall (21). This arrangement permits the fluid flow passage to occupy the maximum cross-sectional area of the through passage ( 25) of valve body (20). A pair of spaced electrodes (72, 74) is also provided at an interface between an interior coating layer of the tubular sleeve (50) to detect damage to the interior coating layer.
REFERENCES:
patent: 3197173 (1965-07-01), Taubenheim
patent: 3775680 (1973-11-01), Egeland
patent: 3826461 (1974-07-01), Summerfield et al.
patent: 3831085 (1974-08-01), Kratavil
patent: 4906917 (1990-03-01), Olness et al.
patent: 5036287 (1991-07-01), Serwatzky
Klein David I.
Lee Kevin L.
Rosenberg Morton J.
Schwadron Martin P.
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