It can be reduced to smaller, but be careful not to become too small, usually not less than one-half of the cross-sectional area of the fan itself.
Because the inlet and outlet of the high-pressure fan are fixed, it is necessary to use a reducing pipe to change its caliber.
After the inlet or outlet of the fan is changed, the pressure will rise a lot, and the flow rate will increase, and it is usually used more for hot air drying.
Three-way or four-way can also be used. It is also possible to separate several thin tubes, but the cross-sectional area needs to be calculated, and it should not be too small, which will cause the motor load.
In addition, the fan is not allowed to block the inlet or outlet for a long time, otherwise the fan will heat up very seriously, and the degree of damage will be burned. This can be done in a short time.
