How to install clean room ducts and parts related issues

1. Ducts and parts of the support, hanger of the embedded parts, nails or expansion bolts should be the location of the right, solid and reliable, buried part of the oil should be removed, and shall not paint.

2. Metal duct support, hanger spacing If no design requirements, for the insulation duct should be consistent with the corresponding support, hanger spacing and cross bracing specifications.

3. For the insulation of the metal duct, due to the choice of insulation materials, the length of the air duct unit length will be different, the level of installation, the distance between the hanger should be designed according to the requirements. If no design requirements, the level of installation, the maximum spacing of the hanger can be required by the standard.

4. In the elbow, the three links should be appropriate to increase support (hanging) frame.

5. Support, hanger can not be set in the sealing, air valve, inspection doors and measuring holes and other parts, one side of the use and viewing distance. Distance from the outlet or the distance between the tube should not be less than 200mm.

6. When the horizontal suspension of the main and dry duct length of more than 20m, should be set to prevent the swing of the fixed point, each system should not be less than one.

7. The connection of the duct should be straight and not twisted. When installed in the horizontal installation of the air duct, the allowable deviation of the level is 3/1000, the total deviation should not be greater than 20mm. Vertical installation of the vertical installation of the duct, the vertical tolerance of 2/1000, the total deviation should not be greater than 20mm. The position of the air duct should be correct and there is no obvious deviation.

8. When the duct is connected to the duct, the fastener nut or screw of the same pipe section should be on the same side and the galvanized gasket should be placed.

9. Multi-leaf valve, butterfly valve, flapper valve and other adjustment devices should be installed in the easy to adjust the site.

10. Hanger, bracket can not be directly in contact with the duct, the middle should be pad with a solid insulation material, the thickness of the insulation layer, to prevent cold bridge.

11. When the ducts pierce the roof, try to fix and set the rain cover.