Plunger valves

Details Plunger valves Plunger valves

1974-03-27

1976-06-08

Cohan, Alan

Valves and valve actuation

With means to increase head and seat contact pressure

Piston

251197, 251324, 251274, F16K 328

Patent

active

039617688

ABSTRACT:
A plunger valve having a straight through passage closed by a cylindrical, elastic plunger. The plunger is movable at right angles to the through passage. It is connected to a screw-threaded stem by a retaining pin which is positioned in a longitudinal open bore of the plunger. In closed position of the valve, the retaining pin contacts the opposite wall of the through passage to limit the elastic deformation of the plunger. In open position of the valve, the retaining pin is slightly retracted within its bore. The retaining pin is rigidly fixed to the stem and is rotatable in the plunger, but the plunger is held non-rotatably in the valve body by circumferential friction. The retaining pin holds the plunger by a shoulder situated in the upper part of the plunger.

REFERENCES:
patent: 1057757 (1913-04-01), Martin
patent: 2659388 (1953-11-01), Rand
patent: 2840340 (1958-06-01), Kaufmann
patent: 3420499 (1969-01-01), Pletcher

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