Bi-directional pressure balanced valve

Details Bi-directional pressure balanced valve Bi-directional pressure balanced valve

1975-11-12

1977-01-11

Nilson, Robert G.

Valves and valve actuation

Balanced valves

Reciprocating

13763013, 13763015, F16K 132

Patent

active

040023192

ABSTRACT:
An improved bi-directional pressure balanced valve includes a deflecting device at the axial opening in the closure disc to prevent an over balancing of the main valve disc assembly when fluid flow from the first flow passage impinges on the axial opening during closure of the valve. The preferred deflecting device includes a circular deflector plate which is mounted on the main disc to be centrally aligned with the axial opening and perpendicular thereto and having a diameter substantially larger than the diameter of the axial opening. The deflector plate is parallel with the lower surface of the main disc and it is separated therefrom to require fluid entering the axial opening to first flow between the lower surface and the deflector plate.

REFERENCES:
patent: 2200226 (1940-05-01), Larson
patent: 3888280 (1975-06-01), Tartaglia

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