Resilient supply and exhaust valve

Abstract

A valve device includes a body member and valve members and is adapted for use in breathing apparatus, such as respirating apparatus, wherein sensitivity of operation enables a valve element to open and close effectively in response to relatively light fluid pressure. The valve device includes a tubular valve mounting member positioned in a valve chamber formed within the valve body and having first and second flanges of an elongated tubular extensible member seated on respective opposite ends thereof and positioned in sealing engagement with the body member. The extensible member has an end wall engageable with a valve seat formed by a tubular annular portion extending inwardly into the valve chamber from the body member and having an outlet opening therethrough and the end wall of the extensible member has ports therein for flow of fluid into and through the outlet opening when a valve element on the end wall of the extensible member is moved to an open position in response to fluid pressure in the extensible member. The end flange adjacent the end wall of the extensible member has a plurality of ports therein for flow into the valve chamber from the outlet opening and outwardly through an exhaust fitting when the valve element is seated on the end wall of the extensible member.