Valve

Details Valve Valve

1976-03-29

1978-05-30

Cohan, Alan

Fluid handling

Destructible or deformable element controlled

Heat destructible or fusible

13762566, 251 634, 251 635, F16K 1107, F16K 31122

Patent

active

040918327

ABSTRACT:
There is disclosed a valve having a spool sealably slidable longitudinally within a bore in its body between alternate positions for controlling flow of a first fluid between lateral ports connecting with the bore. The spool is urged toward a first position by a force due to a spring arranged within a chamber at one end of the bore, and to a second position by a force due to the pressure of a second fluid acting across a piston reciprocable within a chamber at the other end of the bore. A conical shoulder on a head of the spool engages a conical seat on the valve body at the intersection of the other end of the bore with the piston chamber so as to locate the spool in its second position and form a metal-to-metal seal with the seat.

REFERENCES:
patent: 462823 (1891-11-01), Phillipson
patent: 948344 (1910-02-01), Radick
patent: 952605 (1910-03-01), Connors et al.
patent: 1548098 (1925-08-01), Raymond
patent: 3043331 (1962-07-01), Peters
patent: 3107730 (1963-10-01), Lebourg
patent: 3473543 (1969-10-01), Haefner et al.
patent: 3621881 (1971-11-01), Vicari
patent: 3746047 (1973-07-01), Peters
patent: 3823739 (1974-07-01), McMullan
patent: 3863672 (1975-02-01), Theriot et al.
patent: 3996965 (1976-12-01), Peters

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