| 摘要 |
<p>Provided is a supply valve (10) to be attached to a face piece, (2) that can take in and expel air and supply air quickly to a wearer of an air respirator. The supply valve (10) comprises an inlet (27) for medium-pressure air (S1), a supply opening (25) for supplying medium-pressure air (S1) to the face piece (2), and a diaphragm (11). The supply valve (10) also includes a cylindrical housing (21) and a sliding element (22) that can reciprocatingly slide along the inner circumferential surface of the housing (21) towards the shaft direction of the housing (21). The housing (21) has a pilot valve seat (40) that is impelled towards a pilot valve (55) and disposed on the outside of one end section in the shaft direction, a main valve seat (35) disposed on the inside of the opposite end section in the shaft direction, and the inlet (27) formed between the one end section and the opposite end section. The sliding element (22) has a pilot valve (55) which can make contact with the pilot valve seat (40) and a main valve (65) which is impelled towards the main valve seat (35).</p> |
