The kitchen exhaust pipe does not need to be insulated.

The temperature of the grease smoke discharged through the wind wheel is not very high, and the heat-resistant temperature of the PVC exhaust pipe is much higher than the temperature of the grease smoke and the oxidation-resistant ability is high.

Smoke will first go to the secondary flue, and then enter the main flue through the holes in the partition, which ensures that the smoke in each household is isolated. If the secondary flue is connected directly to the main flue, it will be too low pressure and lead to backed-up or cascading smoke.

Expanded information;

Kitchen exhaust notes:

1, the wind direction to consider? Generally in the consideration of the kitchen exhaust smoke should be aware of the wind direction problem, in the choice of the exhaust vent to do a good job of basic considerations. You can achieve a basic understanding of the local wind direction, to see how to install the smoke location is more appropriate, to avoid the backflow of fumes and other issues, but affect the actual home comfort and hygiene of the self.

2, piping layout of the kitchen exhaust are used in a variety of piping, in the setup of the layout should have a comprehensive understanding. Note that according to the size of my kitchen space and layout considerations, to first reserve the secondary flue, the main flue is through the staircase, while the secondary flue is generally independent, so there should be a clear division in the setup.

3, choose the kitchen exhaust pipe installation should also pay attention to the location of the consideration, in order to protect the good smoke effect, it is recommended that the kitchen pipe is not too long, the shorter the better. If the pipe is too long, it will lead directly to the collection of fumes is difficult to discharge, and will flow back into the room, the smoke effect is poor, leading to the home of the fumes smell heavy.

4, change the valve in the kitchen exhaust pipe installation should pay attention to a lot of things, such as stop valves should be replaced often, this is in order to have a better smoke effect. The stop valve is actually to protect the smoke pipe, so that the smoke effect is more obvious, the users can have a better home comfort, smoke effect is obvious.