A PRESSURE REGULATOR

摘要

A pressure regulator (1) comprises a high pressure chamber (2) accommodated in a high pressure housing (3) and a low pressure chamber (4) accommodated in a low pressure housing (5). The chambers (2, 4) can communicate with each other via a controllable valve (6). The maximum pressure level in the high pressure chamber (2) against which the high pressure housing (3) is resistant is higher than the maximum pressure level in the low pressure chamber (4) against which the low pressure housing (5) is resistant. The low pressure chamber (4) is provided with a release valve (3, 18; 19-21) which opens to the outside at a predetermined pressure level in the low pressure chamber (4). The high pressure housing (3) is resiliently connected to and movable with respect to the low pressure housing (5) such that the high pressure housing (3) displaces with respect to the low pressure housing (5) upon a pressure change in the low pressure chamber (4).