建筑法规可能还需要防虹吸或回流装置，使地表水不会被拖进水管道线路和住宅回来。
Building codes may also require anti-siphon or backflow devices, so surface water won't be pulled back into water lines and residential plumbing.
无水小便器要比传统便池成本更低。加上因为没有进水管道和冲洗设备。安装成本降低很多。
Installation costs are also lower since there is no water line to hook up or flushing devices.
通过顶部玻璃纤维绝缘层可以连结管道和电源。使用如图所示的弯管、螺纹接头、管道接头连接冷水进水管和热水出水管。
Connect the cold water supply line and hot water outlet lines using elbows, nipples and unions as shown in the diagrams.
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