CONSTANT FLOW VALVE

摘要

A constant flow valve having a chamber (6) provided therein with a first diaphragm (8) having a valve member (7), a second diaphragm (9) and a third diaphragm (10), and sectioned into a first pressure chamber (11), a second valve chamber (12), a first valve chamber (13) and a second pressure chamber (18). The first pressure chamber has a means for applying a constant inward force to the second diaphragm, and the second pressure chamber has a means for applying a constant inward force to the third diaphragm. The first valve chamber leads to an inlet channel, the second valve chamber has a valve seat (27) corresponding to the valve member, and the valve seat divides the chamber into a lower valve chamber (14) communicating with the first valve chamber through a communication hole made in the first diaphragm and an upper valve chamber (15) communicating with the an outlet channel.