It is because there is no need to worry if the hose is punctured during absence by fitting the faucet to the height of the washing machine and attaching a solenoid valve.
From Japan
On 2012-09-28 00:44:11
Last time we purchased various types of fittings including solenoid valves in order to install the washbasin. Such parts can not be obtained easily, but it is cheap, it is fast, there is no complaint at all. Anyway it is stress free to obtain.
90 degree turning direction at narrow place Pipe of hard PVC pipe required
From Japan
On 2012-09-16 17:14:17
Equipment side (pump) I used it for plumbing work where there is only a limited space but I am satisfied that it can be compacted more than I thought. Compared to single elongated parts, the pressure loss should be slightly larger, but because all piping lengths are short, it is almost equivalent as a whole piping pressure loss in straight pipe length calculation, so it seems that there is almost no effect difference.