Plug-type valve

Details Plug-type valve Plug-type valve

1979-12-10

1981-09-29

Schwadron, Martin P.

Valves and valve actuation

With material guide or restrictor

Valve at point of greatest restriction

251309, F16K 500

Patent

active

042918596

ABSTRACT:
An improved bidirectional plug valve with increased C.sub.v or decreased insertion pressure loss is provided. The improvements reside in a unique combination of surprising structural parameters including an increase in the diffuser-to-dump transition radii, a high degree of dimension match for diffuser and plug chamber, an unconventionally large diffuser angle, and most surprisingly, a reduction in plug port size with a substantial corresponding reduction in plug size and dump area. The indicated structural features of the invention, combine synergistically to provide an unexpected C.sub.v improvement of approximately 50% and a substantial cost reduction for the valve operating mechanism.

REFERENCES:
patent: 1112006 (1914-09-01), Hollis
patent: 1249601 (1917-12-01), Ferranti
patent: 2609174 (1952-09-01), Heinen
patent: 2708094 (1955-03-01), Heinen
patent: 2717758 (1955-09-01), Deventer
patent: 2799467 (1957-07-01), Hedene
patent: 2799468 (1957-07-01), Deventer
patent: 3005617 (1961-10-01), Wolfensperger
patent: 3643914 (1972-02-01), Bake

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