| 摘要 |
First and second solenoid valves are connected respectively to a cold water supply pipe and hot water supply pipe. Washing machines having first and second inlets are connected through the pair of hoses to the solenoid valves on the water supply pipes. The circuit means are connected to the solenoid valves on the water supply pipe and the washing machine internal solenoid valves, so that the valves are operated in synchronism whereby the inlet valves internal to the washing machine are enabled prior to enabling the solenoid valves connected to the water supply pipes. The valve sequence is reversed during a disabled operation, so that the solenoid valves connected to the water supply pipes are closed prior to closing the inlet valves. The operational sequence of the valves reduces the static pressure within the hoses to substantially zero.
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