| 摘要 |
The invention relates to improvements in a pressure regulator for a compressed air circuit. The regulator comprises a measuring chamber connected to the circuit and containing a pressure sensing element, and a regulating chamber connected to a compressor and having an orifice for admission to the measuring chamber, a discharge orifice and an obturator actuated by the pressure sensing element and adapted to open or shut off the discharge orifice according to whether the circuit pressure is higher or lower than predetermined values. According to the invention the regulator comprises a resilient check-valve capable of being applied against the admission orifice to the measuring chamber to prevent backflow of air during the displacement of the obturator. |
