| 摘要 |
<p>The invention relates to an axial blocking valve, which has a control mechanism incorporated and it is meant for cutting off gas supply, in case of pressure variations inside the pipe downstream of the pressure regulator in relation to the pre-set pressure. According to the invention, the blocking valve consists of two input and output bodies (1 and 2), between which there are mounted a guide ring (6) and a diffuser seat (4), integral with a deflector (7) between which there being provided an air-tight packing (9) to which there comes in contact the edge of a piston valve (10), which slides guided by some rings (11) gliding inside the body (1) and the guide ring (6), and the piston valve (10) is maintained in the "closed" working position, by means of a helical spring (13), coaxial therewith, which is in contact with the input body (1), and at the other end, with an exterior shoulder (a) of the valve (10).</p> |
