The water column of a certain height in the water trap is called "water seal". "Water seal" is a measure to use a certain height of hydrostatic pressure to resist the pressure change in the drain pipe and prevent the gas in the pipe from entering the room. In building drainage pipes, water seals are mainly achieved through traps. Generally speaking, the height of the water seal of the water trap shall not be less than 5cm.
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Name: Naser sadri time:2022-08-25 10:15:41
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