Low torque and low noise butterfly valve disc

Details Low torque and low noise butterfly valve disc Low torque and low noise butterfly valve disc

1975-03-12

1976-06-01

Rosenthal, Arnold

Fluid handling

Systems

Multi-way valve unit

251305, 251121, F16K 122, F16K 4704

Patent

active

039601773

ABSTRACT:
A butterfly valve disc with generally oval plane surface, tiltingly arranged so that the outer periphery forms a perfect circle intersecting with the inner bore of a butterfly valve, and where the outer rim of the disc further supports a row of ribs arranged generally parallel to the circular bore of said butterfly valve and pointing in opposite directions below and above the disc's horizontal axis and forming between themselves a number of flow passages, the trapezoidal cross-section of which gradually constricts the fluid towards its discharge side.

REFERENCES:
patent: 965322 (1910-07-01), Peterson
patent: 1131371 (1915-03-01), Hatfield
patent: 1302891 (1919-05-01), Balthasar
patent: 2882010 (1959-04-01), Bryant
patent: 3298677 (1967-01-01), Anderson
patent: 3677297 (1972-07-01), Walton

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