Flow control valve

Details Flow control valve Flow control valve

1988-08-01

1990-12-11

Rosenthal, Arnold

Valves and valve actuation

With material guide or restrictor

Movable or resilient guide or restrictor

25112905, 251122, 25112911, 25112908, F16K 138, F16K 3104

Patent

active

049764047

ABSTRACT:
A flow control having a wide flow rate range and excellent linearity between the degree of valve opening and flow rate. The valve includes a cylindrical or conical valve head formed on a circular-truncated-cone-shaped working face which is tapered towards the outlet of the valve with the valve head being located inside the outlet-side casing. With respect to the area of the valve opening defined by the valve head and the valve seat, the valve head is shaped so that the rate of change of the flow rate with valve stroke is small and linear, whereby fine control of the flow rate can be accurately achieved over the entire flow rate range. The valve stroke to fully open the valve occurs in the inlet-side casing. A servo motor or the like is employed as the drive source for operating the valve.

REFERENCES:
patent: 2590318 (1952-03-01), Hollis
patent: 3221767 (1965-12-01), McCarty et al.
patent: 3280836 (1966-10-01), Callaghan, Jr. et al.
patent: 3488030 (1970-01-01), Hulme et al.
patent: 3521852 (1970-07-01), Gillis, Jr.
patent: 4097786 (1978-06-01), Lund
patent: 4412517 (1983-11-01), Kobashi et al.
patent: 4480614 (1984-11-01), Kobashi et al.
patent: 4575047 (1986-03-01), Boos et al.
patent: 4771807 (1988-09-01), Karani
E. Sprenger, W. Hohmann, "Taschenbuch fur Heizung und Klimatechnik", 62. Ausgabe, 1983, R. Oldenbourg, Verlag Munchen, Wien, pp. 1068, 1069.

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