Valves and valve actuation – With selective flow regulation – Rotary
Patent
1989-12-21
1991-02-05
Rosenthal, Arnold
Valves and valve actuation
With selective flow regulation
Rotary
13762532, 137 1, 251309, 251208, F16K 510
Patent
active
049898337
ABSTRACT:
A regulation valve and a method for changing the characteristic flow curve and/or the maximum capacity of a regulation valve. The valve consists of a housing provided with a flow duct, a closing member, which is fitted inside the housing in the flow duct and shaped as a body of rotation or as a part of a body of rotation, and a turning shaft which extends from the closing member to outside the housing to facilitate relating the closing member. The shape of the forward edge of the closing face of the closing member differs from the shape of the rearward edge. The characteristic flow curve of the valve is affected by the shape of the edge of the closing face of the closing member at whose side the flow opening starts being formed when the valve is rotated from the closed position to the opened position. To change the characteristic flow and/or the maximum capacity, one of the two directions of rotation is chosen to be the direction of opening of the valve.
REFERENCES:
patent: 3191906 (1965-06-01), Zeigler et al.
patent: 3504887 (1970-04-01), Okerblom
patent: 3700003 (1972-10-01), Smith
patent: 3773291 (1973-11-01), Grauer
Neles Oy
Rosenthal Arnold
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