Patent ID: 9669533
Date: 2017-06-06
CPC Classifications: B25F,F15B,F16K,Y10T

Claim:
1. A valve for selectively fluidly communicating a first fluid volume and a second fluid volume, the valve comprising: a valve body; an inlet orifice in fluid communication with the first fluid volume; an outlet aperture in fluid communication with the second fluid volume and in selective fluid communication with the inlet orifice by a first fluid flow path; an activation member axially movable relative to the valve body; a first plunger axially movable within the valve body, the first plunger including an aperture therethrough defining a second fluid flow path between the first and second fluid volumes; a second plunger axially movable relative to the first plunger; and a first biasing member that biases the first plunger toward the inlet orifice, wherein the valve is operable in a first mode in which fluid flow is only permitted along the first fluid flow path in response to manual actuation of the activation member, wherein the valve is operable in a second mode in which fluid flow is only permitted along the second fluid flow path when a pressure difference between the first and second fluid volumes reaches a predetermined value, and wherein a distal portion of the second plunger forms a seal with the inlet orifice when the valve is closed, and wherein the distal portion is spaced from the inlet orifice when the valve is open.