초록 ▼

A combination pressure regulator/drain check valve comprising a housing having an inlet, an outlet and a flowpath therebetween, the flowpath at least partially defined by a reciprocable plunger. One end of the plunger closest the inlet approaches a pressure regulator seat while the opposite end clos

A combination pressure regulator/drain check valve comprising a housing having an inlet, an outlet and a flowpath therebetween, the flowpath at least partially defined by a reciprocable plunger. One end of the plunger closest the inlet approaches a pressure regulator seat while the opposite end closest the outlet is engageable with a drain check valve seat. The plunger is normally biased toward the drain check seat.

대표청구항 ▼

[ What is claimed is:] [1.] A combined pressure regulator drain check valve comprising:a housing having a main body with an inlet at one end thereof, and a cap secured to an opposite end thereof, said cap having an outlet, an axial flowpath extending between said inlet and said outlet;a pressure reg

[ What is claimed is:] [1.] A combined pressure regulator drain check valve comprising:a housing having a main body with an inlet at one end thereof, and a cap secured to an opposite end thereof, said cap having an outlet, an axial flowpath extending between said inlet and said outlet;a pressure regulator seat secured within said main body adjacent said inlet;a drain check seat formed integrally with the cap adjacent said outlet;a tubular plunger located within said main body movable toward and away from the pressure regulator seat and the drain check seat; said plunger having a lower open end defined by a cylindrical edge in alignment with said pressure regulator seat; said plunger having an open upper end which supports a drain check valve including a resilient seal adapted to engage said drain check valve seat; said plunger axially aligned with said inlet and outlet to establish a portion of said axial flowpath; said drain check valve connected to an outer annular ring by a plurality of radial webs which permit flow around the drain check valve into the outlet when the valve is open; said outer annular ring fixed to an outer peripheral wall of said plunger for movement therewith; a diaphragm extending radially between said plunger and said main body, with one side of a radial flange on said plunger providing support for a radially inner portion of said diaphragm; anda spring having one end engaging an opposite side of said radial flange, and an opposite end engaging the main body at a location proximate to said pressure regulator seat, said spring normally biasing said plunger and said drain check valve in a direction toward said drain check seat.