Title:
ANNULAR PISTON VALVE
Document Type and Number:
Japanese Patent JPS5842871
Kind Code:
A
Abstract:
A valve construction wherein a streamlined flow diverter is centered within a cylindrical valve body. A slidable annular seat ring is biased upstream to seal against a seating surface on the inwardly tapered downstream side of the flow diverter and is biased by fluid pressure so that the valve opens when line pressure exceeds the control pressure. The inner contour of the retractable seat ring and the tapered outer contour of the downstream side of the flow diverter are such that the minimum flow area between them occurs a short distance downstream of the seating surface and is thereafter maintained or slightly increased gradually to an abrupt termination of the tapered surface.
Inventors:
RICHIYAADO ESU BURUMU
Application Number:
JP10664282A
Publication Date:
March 12, 1983
Filing Date:
June 21, 1982
Export Citation:
Assignee:
GROVE VALVE & REGULATOR CO
International Classes:
F16K1/12; F16K25/04; F16K3/26; (IPC1-7): F16K1/34
Attorney, Agent or Firm:
Hideto Asamura