Emergency valve incorporating thermal foamable plastic material

Details Emergency valve incorporating thermal foamable plastic material Emergency valve incorporating thermal foamable plastic material

1975-12-19

1978-02-07

Schwadron, Martin P.

Fluid handling

Destructible or deformable element controlled

137 79, 138 89, 166 57, 251 11, F16K 1738, A62C 3706

Patent

active

040721590

ABSTRACT:
This emergency valve comprises a thermal foamable plastics element or a valve operation gear with a built-in thermal foamable plastics element, which is functioned by thermal foaming and expansion of the built-in thermal foamable plastics, and if a fire broken out near the valve, the valve should be automatically and non-reversibly closed or opened by the valve operation gear which is functioned by thermal foamed plastics or thermal foamed plastics in itself.

REFERENCES:
patent: 1254888 (1918-01-01), Deegan et al.
patent: 2241086 (1941-05-01), Gould
patent: 2662550 (1953-12-01), Meyer
patent: 2884866 (1959-05-01), Patterson
patent: 2902222 (1959-09-01), Noakes
patent: 3047008 (1962-07-01), Clarkson
patent: 3156263 (1964-11-01), Adelman
patent: 3890994 (1975-06-01), Olsen
patent: 3904111 (1975-09-01), Petersson

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