Butterfly valve to prevent dew condensation therefrom

Details Butterfly valve to prevent dew condensation therefrom Butterfly valve to prevent dew condensation therefrom

1990-12-27

1992-09-29

Chambers, A. Michael

Fluid handling

With casing, support, protector or static constructional...

Jacketed

F16L 700

Patent

active

051507315

ABSTRACT:
A butterfly valve having a thermal break point located in the shaft cylinder portion through which the valve stem passes is shown and described. The thermal break is a heat insulating material which may be non-metallic, a plastic, and an electrical insulator. The portion of the shaft cylinder extending out of an insulating core is made of insulating material and connected to metallic parts of the valve shell structure by gluing, vibration melting adhesion, and mechanical overlapping methods.

REFERENCES:
patent: 1606500 (1926-11-01), Bodman
patent: 3990675 (1976-11-01), Bonafous
patent: 4510965 (1985-04-01), Peroux et al.
patent: 4774750 (1988-10-01), Platusich
patent: 4777977 (1988-10-01), Platusich

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