1) CJ/T 186-2003 standard is only applicable to floor drains used in general industrial and civil buildings, not suitable for special places such as anti-wave floor drains for civil air defense projects and explosion-proof floor drains for petrochemical enterprises. For floor drains in special places, in addition to referring to this standard, they should also meet the technical requirements of related industries.
2) Water seal is one of the important features of a water-sealed floor drain. When selecting, you should know whether the water seal depth of the product reaches 50mm. Side wall type floor drains, floor drains with mesh frame, and airtight floor drains generally do not have water seals; most of the overflow-proof floor drains and multi-channel floor drains have water seals, and the selection should be based on the manufacturer's information.
For floor drains without water seals, a water trap with a water seal depth of not less than 50mm should be installed in the floor drain discharge pipe. This component can be configured by the floor drain manufacturer, or set by the construction unit that installs the floor drain.
3) The height of the floor drain grate can be adjusted, and the adjustment height is not less than 35mm to ensure that the level of the floor drain surface after the ground decoration is completed is the same as the ground. The floor drain is equipped with a waterproof wing ring, which is to meet the waterproof requirements when the floor drain is installed on the floor.
The grating strength of the floor drain located in the car passage of the underground garage or in the load-bearing place should be able to meet the corresponding load.
4) The structure of the floor drain with water seal should be reasonable and smooth, and the sundries in the drainage are not easy to settle down; the cross-sectional area of ​​the water passage of each part should be larger than the cross-sectional area of ​​the discharge pipe, and the minimum net width of the runner cross-section should not be less than 10mm.
5) There are three types of floor drain connection: socket; thread; clamp. The size of the connection port can be determined according to the current national regulations
6) Deodorant floor drains should be used first, and floor drains may not be installed in places that do not require drainage. The builder shall not complete the construction if the floor drain is not provided with a backwater bay.