Vacuum transmitting valve

摘要

Disclosed is an improvement in a vacuum transmitting valve for an exhaust gas purifying system on an automobile engine, of the type which has an inlet chamber and an outlet chamber divided by a partition which is provided with a vacuum transmitting orifice. The inlet chamber has at least one opening for bleeding purging air into the inlet chamber to expel therefrom any gasoline vapor that might otherwise reach and clog the orifice.