When a large volume of water enters a plumbing drain pipe it pushes air in front of it towards the sewer or septic tank.
Sewer trap on roof.
Through the stack sewer gases are carried up to the roof through vent lines.
Vent pipes on the roof are intake vents not exhaust vents as most people believe.
Clogging may happen due to simple problems such as accumulation of dirt improper sloping from incorrect vent installation broken pipe or a broken sewer trap itself.
Are roof vent pipes sewer gas exhaust pipes.
Drain pipes take the wastewater to the soil stack.
When sewer traps need service or you need expert advice.
Of course there are many variables involved in a clogged sewer trap situation.
It also allows fresh air into the plumbing system to help water flow smoothly through the drain pipes however no water runs through the plumbing vent pipe.
Wastewater enters the plumbing system through fixtures such as the toilet sinks and showers.
The most important component of a drain which most people take for granted is the trap.
A drainpipe attached to the p trap goes into an opening in the wall.
When the wastewater exits the fixture it flows through a trap.
They re called traps because they do just that.
This air must be replaced and it is sucked into the plumbing system through the roof vents.
It is a vertical pipe attached to a drain line and runs through the roof of your home.
Trap water inside preventing sewer gases from coming back into the house.
The roof vent is designed to remove sewer gas and regulate air pressure in your home s pipes.