Importance

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Abstract

A pressure regulating valve comprising: a magnetic circuit comprising a magnetic central portion having a fluid passage, adapted to receive fluid at a first pressure level; an annular, upraised magnetic valve seat coaxial with the central portion and disposed at and about one end of the central portion, the one end and valve seat disposed within a pressure chamber, the magnetic circuit further including a movable valve element, acted upon by the magnetic flux flowing through the magnetic circuit, to regulate the pressure within the pressure chamber corresponding with an input electrical signal, including a disk comprising, in at least a portion thereof through which the magnetic flux flows, a non-magnetic material of a given thickness facing the valve seat and a magnetic material secured to the non-magnetic material on a dimension thereof opposite the valve seat; a spring for biasing the disk toward the valve seat; an output port for communicating the pressure chamber to a pressure responsive device; an input port for communicating fluid at a second pressure level to the pressure chamber.

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First Claim