초록 ▼

An electrically actuated valve for incremental fluid flow rate control is disclosed. The valve is comprised of a valve body having an interior with a planar outlet surface against which a rectilinear valve element is slidingly operated. The valve body includes an inlet orifice and an outlet orifice

An electrically actuated valve for incremental fluid flow rate control is disclosed. The valve is comprised of a valve body having an interior with a planar outlet surface against which a rectilinear valve element is slidingly operated. The valve body includes an inlet orifice and an outlet orifice in the planar outlet surface for fluid flow through the valve body. The valve element has an orifice therethrough controlling flow through the outlet orifice in accordance with the position of the valve element, which is linearly actuated by a rotary stepper motor.

대표청구항 ▼

A variable flow rate valve comprised of: A valve body defining an internal metering chamber having a substantially planar outlet surface, said valve body having a first wall defining an inlet aperture for permitting fluid flow into said metering chamber and a second wall defining an outlet aperture

A variable flow rate valve comprised of: A valve body defining an internal metering chamber having a substantially planar outlet surface, said valve body having a first wall defining an inlet aperture for permitting fluid flow into said metering chamber and a second wall defining an outlet aperture for permitting fluid flow from said metering chamber; a rectilinear metering piston disposed in said metering chamber in sliding engagement with said planar outlet surface, said metering piston having a metering orifice and a closure cavity spaced from said metering orifice, said metering piston further having a bore connecting said metering orifice and said closure cavity; a closure member disposed in said closure cavity for sealingly engaging said second wall of said valve body; means for sealingly biasing said metering piston against said planar outlet surface of said valve body metering chamber; and means for incrementally moving said metering piston in said metering chamber.