| 摘要 |
Pressure regulating valve for controlling the pressure at which a pressurized propellant gas is injected into a container containing a liquid for driving said liquid out of the container, said valve comprising: A first and a second polymeric shells (2), (3), the first shell (2) comprising a gas inlet (5) and outlet (4) openings, and the second shell (3) containing means (7) for resiliency biasing, a polymeric membrane (9) clamped between the first and second shells (2), (3), thus defining a first and a second chambers sealingly separated by the membrane, a joint between the first and second polymeric shells, strong enough to withstand the pressures reigning in either chamber and ensuring fluid tightness between the two chambers; characterized in that, all polymeric components (2), (3), (9) of said pressure regulating valve are made of the same polymer class. |
