| 摘要 |
<p>The present invention concerns a re-configurable pressure regulator (10) for breathing apparatus. The regulator comprises a valve housing (14) having connection means (36,52) at first and second ends thereof for connection, in use, at one of the ends to a pressurised source (90,92) of breathable gas and at the other end to a removable blanking plug (42), wherein in a first configuration of the regulator the first end is closed by a removable blanking plug and in a second configuration the second end is closed by the blanking plug, with the other end being open and connectable to said breathable source of gases. The regulator further comprising a diaphragm case (12) and a diaphragm (18) located therein dividing the interior of the case to provide a first chamber (16) having an inlet/outlet for communicating breathable gases to and from a user. The first chamber accommodates at least part of the valve housing. The interior of the valve housing defines a second chamber in communication with the first chamber and accommodates a dual acting valve (70,72), which in the fim configuration of the regulator is operable to open and close a valve opening at the second end of the valve housing for communication with the source of breathable gases, and in the second configuration is operable to open and close a valve opening at the first end of said valve housing for communication with the source. Valve control means (22) are provided for regulating movement of the valve in accordance with the deflection of the diaphragm in the diaphragm case.</p> |
