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Wuzhong water tank the water tank for drinking water shall be provided with a sealed cover

06-13 one thousand and twenty-six

Wuzhong water tank Vent pipe: the water tank for drinking water shall be provided with a sealed box cover, and the box cover shall be equipped with an overhaul manhole and a vent pipe. The vent pipe can be extended to indoor or outdoor, only to the place with harmful gas. The pipe orifice should be equipped with a filter screen to prevent dust, insects, mosquitoes and flies. Generally, the pipe orifice should be set downward. It is not allowed to install valves, water seals and other devices that hinder ventilation. The vent pipe shall not be connected to the drainage system and ventilation duct. The diameter of vent pipe is generally no less than 50mm.