| 摘要 |
A valve assembly 1 comprises first and second on/off valves 7, 8 connected to a supply line 3 and first and second delivery lines 4, 5. The first on/off valve 7 is connected to the supply line 3 and to the first delivery line 4, and comprises a first closure member 11 powered by an electromagnetic actuator 12. The second on/off valve 8 is connected to the first supply line 3 and to the second delivery line 5, and comprises a second spring-loaded closure member 13 and an actuating chamber 14. A passage 10 connecting the first on/off valve 7, the first delivery line 4 and the actuating chamber 14 is provided to alter the pressure in the actuating chamber 14 by means of the action of the electromagnetic actuator 12 of the first on/off valve 7. |
