Solid handling valve

Details Solid handling valve Solid handling valve

1977-06-01

1979-11-06

Schwadron, Martin P.

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

251 63, 251332, F16K 3112

Patent

active

041733274

ABSTRACT:
The present invention is directed to a solids handling valve for use in combination with lock hoppers utilized for conveying pulverized coal to a coal gasifier. The valve comprises a fluid-actuated flow control piston disposed within a housing and provided with a tapered primary seal having a recessed seat on the housing and a radially expandable fluid-actuated secondary seal. The valve seals are highly resistive to corrosion, erosion and abrasion by the solids, liquids, and gases associated with the gasification process so as to minimize valve failure.

REFERENCES:
patent: 1508264 (1924-09-01), Armentrout
patent: 2075812 (1937-04-01), Kerr et al.
patent: 2095410 (1937-10-01), Diesher
patent: 2953345 (1960-09-01), Slemmons et al.

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