Regulating valve system

Details Regulating valve system Regulating valve system

1976-04-14

1978-06-13

Cline, William R.

Fluid handling

Self-proportioning or correlating systems

Self-proportioning flow systems

137508, G05D 1102

Patent

active

040943330

ABSTRACT:
A pressure regulating valve is provided having a balance diaphragm for positioning a slide valve in flow controlling relation to maintain a fluid outlet in pressure balanced relation despite pressure variations at the inlet. The valve arrangement includes in combination with the inlet a pre-sensing chamber to apply a biassing force component on the valve member in a closing direction, responsive to inlet pressure. In a further embodiment utilizing a pair of such valves in opposed mutually balancing relation as a pressure balancing valve, in addition to modifying the characteristic valve response time, the arrangement has the particular benefit of being able to virtually close off the flow from one of the two sources of line pressure in the event that pressure at the respective other inlet falls to an ineffective value. While useful with many fluids, particular utility is found in mixing hot and cold liquids.

REFERENCES:
patent: 962111 (1910-06-01), Assmann
patent: 2645240 (1953-07-01), Drake
patent: 2874715 (1959-02-01), Richards
patent: 3054420 (1962-09-01), Williams
patent: 3688790 (1972-09-01), Esten
patent: 3724480 (1973-04-01), Povalski et al.
patent: 3727627 (1973-04-01), Bird et al.
patent: 3788311 (1974-01-01), Fahlman et al.
patent: 3799496 (1974-03-01), Esten

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