What is a drainage system?  

When you think of drainage, your head may only think of water pipes and some sanitary appliances, such as toilets, washbasins and bathtubs. However, in terms of drainage, we should consider more in the process of drainage. If the pipeline is unblocked? Is biogas released in the house?

What is the exhaust pipe of the drainage system?

The exhaust pipe is also called the vent of the drainage system. It is the pipe that releases methane from each sanitary ware in your home and discharges it to the outside when draining water. Typically, these pipes lead out of the roof or wall.