Stretch valve method and apparatus

Details Stretch valve method and apparatus Stretch valve method and apparatus

1993-03-22

1994-02-15

Hepperle, Stephen M.

Fluid handling

Processes

137903, 251321, 251902, F16K 720

Patent

active

052858057

ABSTRACT:
A stretch valve which achieves precise control of fluid flow rates through the use of a cylindrical elastomeric valve element. This elastomer element is installed within the cylindrical flow path of a valve body. The flow path has a diameter that is slightly smaller than that of the elastomer element, which is therefore constrained within the flow path. Longitudinal stretching of the elastomer element causes the diameter of the elastomer element to decrease. As a result, a flow path is opened. The further the elastomer element is stretched, the larger is the fluid path that is created. Therefore, precise control of the fluid flow rate is made possible.

REFERENCES:
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patent: 2095770 (1937-10-01), Sorenson
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patent: 3184216 (1965-05-01), Lovell
patent: 3548878 (1970-12-01), Brigandi
patent: 3584834 (1971-06-01), Reid et al.
patent: 4135699 (1979-01-01), Petzsch et al.
patent: 4275765 (1981-06-01), Dugas
patent: 4326541 (1982-04-01), Eckels

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