Valve capable of bidirectional flow

Details Valve capable of bidirectional flow Valve capable of bidirectional flow

1986-03-27

1987-06-30

Michalsky, Gerald A.

Fluid handling

Systems

Flow path with serial valves and/or closures

1376142, 251 44, F16K 3138

Patent

active

046762710

ABSTRACT:
An improved valve structure is disclosed, which comprises a sleeve containing a valve chamber and a valve seat therein, a valve body slidably accommodated in the sleeve and having a spherical surface, an axial port formed in the sleeve so as to communicate with the valve seat, a front chamber formed between the valve body and the valve seat, a side port formed in the side wall of the valve chamber and communicated with the front chamber, a spring receiver provided at an end of the sleeve in the opposite direction to the valve seat, a rear chamber formed between the valve body and the spring receiver, a spring disposed between the spring receiver and the valve body to bias the valve body towards the valve seat, a communication passageway formed to communicate the front chamber with the rear chamber and having a smaller cross-section area than the side port, a control passageway provided in communication with the rear chamber to communicate the rear chamber with the exterior of the valve chamber, and a control valve provided in the control passageway.

REFERENCES:
patent: 641009 (1900-01-01), Gulland
patent: 2891518 (1959-06-01), Krapf
patent: 3023997 (1962-03-01), Schultz
patent: 3204926 (1965-09-01), Wismar
patent: 3360234 (1967-12-01), Thorborn
patent: 3905393 (1975-09-01), Hartwig
patent: 4391183 (1983-07-01), Broms et al.

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