Automatic changeover regulator, to allow for connection to reserve container while main container can be refilled

摘要

A pressure regulator (10) includes a changeover regulator (12) with plural inlets (not shown in this view). Inside the regulator, each inlet has a closure member (62) connected to a diaphragm (100) for control of the closure members (62) in response to pressure inside the regulator (12). Biasing members (56) are stabilized in position by either an apertured plate (102), a cup (104) or both. A changeover handle (19) depresses one spring (56) or the other to bias one closure member (62) open to admit gas from the associated inlet.