Plug valve

Details Plug valve Plug valve

1991-05-28

1992-02-25

Rosenthal, Arnold

Fluid handling

Systems

Multi-way valve unit

13762538, 251325, F16K 152, F16K 148

Patent

active

050904507

ABSTRACT:
A valve which is comprised of a body having an inlet passage and an outlet passage. The inlet passage intersects the outlet passage at an angle. The outlet passage has an annular shoulder. A plug is disposed within the outlet passage at the intersection of the inlet passage with the outlet passage. The plug has sides with openings thereby permitting fluids to flow the inlet passage into the outlet passage. The plug is telescopically movable in the outlet passage between a first position and a second position. In the first positon fluids flow from the inlet passage pass through the openings into the outlet passage. The openings in the plug becoming increasingly restricted as the plug moves toward the second position. In the second position the openings in the plug are totally obstructed by the outlet passage. The sides of the plug have an annular flange extending outwardly. The flange has a channel opening toward the outlet passage. A seal is disposed in the channel. When the plug is in the first position the seal means is sheltered from fluid flow within the channel. When the plug is in the second position the seal in the channel engages the annular shoulder.

REFERENCES:
patent: 771486 (1904-10-01), McCarthy
patent: 1868811 (1932-06-01), Yarnall
patent: 1977565 (1933-04-01), Yarnall
patent: 2029837 (1936-02-01), Schmid
patent: 3212524 (1967-10-01), Caldwell

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