| 摘要 |
Safety fittings have two disk valves without springs mutually linked by their housings. The first protects against overpressure and the second against depression. The object of the invention is to obtain compact and easy-to-clean safety fittings with a minimum amount of unmodified and/or possibly modified standard components. For that purpose, a connecting housing (1) allows overpressure to be applied to the first disk valve (2) and depression to be applied to the second disk valve (3). Disks (5 or 6) associated each to one disk valve (2; 3) are brought to their open position when a determined reaction pressure is exceeded. The connecting housing (1) has an upper and a lower opening (1c et 1d). The housing (2a) of the first disk valve (2), which receives the disk (5), is directly received in the upper opening (1c) of the housing and the housing (3a) of the second disk valve (3), which receives the disk (6), is directly received in the lower opening (1d) of the housing. |
