Apparatus for controlling the volume and pressure of a pressure

Details Apparatus for controlling the volume and pressure of a pressure Apparatus for controlling the volume and pressure of a pressure

1976-03-22

1977-05-03

Cohan, Alan

Fluid handling

Self-proportioning or correlating systems

Self-controlled branched flow systems

1375525, 137601, F16K 1110

Patent

active

040208621

ABSTRACT:
Apparatus for controlling the volume and pressure of a pressure medium in a die-casting machine has an inlet, to which high pressure, high volume flow fluid can be supplied, and an outlet to a point of use. For controlling volume flow, a plurality of diaphragms are arranged in parallel between the lines. Each has a volume actuating valve associated therewith. Actuation of these valves can allow a selected number of the diaphragms to be connected across the line to give a range of possible volume flow at a given pressure. For pressure control, a line leads from the inlet line to a plurality of series mounted pressure responsive valves, each associated with a pressure actuating valve, which can be actuated to selectively cause any one of a range of pressures to prevail in the line and in the outlet line. The selected pressure is also lead to a by-pass valve connected to the inlet, so that pressure greater than the selected pressure is diverted from the inlet line. Pressure is thus regulated coarsely at the inlet and finely at the outlet.

REFERENCES:
patent: 3063468 (1962-11-01), Defour
patent: 3156157 (1964-11-01), Smith
patent: 3437098 (1969-04-01), Stirk

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