초록 ▼

A valve apparatus for distributing flow from an inlet among either of two outlets consists of essentially four components comprising a valve body, a second valve seat, a poppet assembly, and an actuator assembly. The valve body comprises an inlet port and two outlet ports disposed between a top end

A valve apparatus for distributing flow from an inlet among either of two outlets consists of essentially four components comprising a valve body, a second valve seat, a poppet assembly, and an actuator assembly. The valve body comprises an inlet port and two outlet ports disposed between a top end and a bottom end of the body. The inlet and outlet ports communicate with a centrally located valve chamber. A first valve seat is integral with the body and is disposed in the chamber between the inlet port and the second outlet port. A second valve seat is formed separately from the body and is disposed within the chamber between the inlet port and the first outlet port. A poppet assembly is disposed within the chamber and comprises an enlarged diameter section integral with a valve stem positioned between opposing top and bottom ends of the stem. The enlarged diameter section comprises an upper shoulder adjacent the second valve seat and a lower shoulder adjacent the first valve seat. A diaphragm is integral with the stem and positioned at the top end of the body. Actuating means displace the poppet assembly between a first position and second position within the valve chamber effecting flow to the first and second outlets, respectively.

대표청구항 ▼

A three-way valve consisting essentially of four components including: a one-piece valve body having a top end and a bottom end, the valve body comprising: an inlet port and first and second outlet ports disposed between the top and bottom ends; a valve chamber centrally located in an axial position

A three-way valve consisting essentially of four components including: a one-piece valve body having a top end and a bottom end, the valve body comprising: an inlet port and first and second outlet ports disposed between the top and bottom ends; a valve chamber centrally located in an axial position within the valve body; a first valve seat formed integrally with the valve chamber facing toward the top end of the valve body and located between the inlet port and the second outlet port; a second valve seat formed separately from the valve body and mounted in the valve chamber at a position above the first valve seat, the second valve seat facing the bottom end and located between the inlet port and the first outlet port; a poppet assembly formed separately from the valve body and mounted for axial movement within the valve chamber, the poppet assembly comprising: a valve stem having an enlarged diameter section between its top and bottom end portions; and a diaphragm formed integrally with its top end and extending radially therefrom, the diaphragm having a peripheral edge that forms an air and liquid-tight seal against a side wall of said valve chamber, the enlarged diameter section of the valve stem located between the first and second valve seats and comprising a lower shoulder for engaging the first valve seat when in a first axial position within the valve chamber, and an upper shoulder for engaging the second valve seat when in a second axial position within the valve chamber; and means for moving the poppet assembly between the first and second positions.