Device for shutting of pipelines for transport of bulk products

Details Device for shutting of pipelines for transport of bulk products Device for shutting of pipelines for transport of bulk products

1990-02-28

1992-04-07

Walton, George L.

Fluid handling

With cleaner, lubrication added to fluid or liquid sealing...

Cleaning or steam sterilizing

251 58, 251159, 251172, 251301, 251303, 251 635, F16K 120, F16K 310, F16K 2500

Patent

active

051018535

ABSTRACT:
The device comprises a housing with a circular passage orifice, a pivoting closing element in the form of a spherical dome and a circular gasket surrounding the said orifice and mounted on an annular support axially displacable towards the closing element under the action of a pneumatic fluid, the said annular support possessing for this purpose a passive annular surface exposed to the pressure in the said housing, the active surface of the support being larger than its passive surface.

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patent: 4215722 (1980-08-01), Sigmon
patent: 4226258 (1980-10-01), Nakanishi
patent: 4262688 (1981-04-01), Bialkowski
patent: 4519579 (1985-05-01), Brestel et al.
Patent Abstract of Japan, vol. 9, No. 132 (M-385) [1855], Jun. 7, 1985.

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