Contamination-resistant valve for high-temperature, high-pressur

Details Contamination-resistant valve for high-temperature, high-pressur Contamination-resistant valve for high-temperature, high-pressur

1975-05-19

1977-04-05

Nilson, Robert G.

Valves and valve actuation

With means to increase head and seat contact pressure

Piston

251171, 251332, 431263, F16K 144

Patent

active

040158152

ABSTRACT:
The valve for use in thermal shock deburring apparatus, in which oxygen and hydrogen are combined under explosive conditions, and which provides reliable shut-off of the respective gas component being supplied to an explosion jet chamber, and which prevents backfire or backflash, is enclosed in a housing formed with a bore, preferably cylindrical, in which an insert sleeve is located; a resiliently deformable sealing material such as, for example, Teflon, is located between a portion of the bore and the sleeve. A valve plunger is shaped to engage the resiliently deformable material to seat thereagainst; the plunger is formed with a projecting cylindrical portion fitting into the sleeve so that, upon engagement of the plunger with the resiliently deformable substance, inwardly directed radial pressure will additionally be exerted upon deformation of the substance over the sleeve against the projection, to provide a reliable seal and, if contamination should damage the sealing material, resilient deformation permits self-healing thereof.

REFERENCES:
patent: 565682 (1896-08-01), Jenkins
patent: 1556880 (1925-10-01), Royer
patent: 1728077 (1929-09-01), Moyer
patent: 3318577 (1967-05-01), Banks

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