14+ How Plumbing Venting Works. Venting of sanitary sewer drains in a home works by allowing air to move with the water that drains through the pipe. Vent pipes run from waste or drain pipes upwards, ending outside the building, usually sticking up through the roof.
The best way to clear a frozen vent is. A vent pipe which is the continuation of a soil stack which means a toilet is drained into it versus a waste stack that is continuation of a grey water drain. A quick internet search for plumbing vent diagram will bring up multiple ways to tackle this issue, but how do you know which one will work for your notice how the main vent and waste pipe remain separated behind the sink, only connecting via the attached went pipe.
Only the line connected the tank is vented.
So, you may want to have this job done by someone who has experience working up blockages caused by frozen plumbing vents can be a problem for homes located in extremely cold climates. At the fixtures (bridges between the two systems), the air admitted by the vent stack and vent pipes keeps the traps sealed and prevents sewer gases from backing up. Venting allows water to pass out of the drains easily. They assume that when they release water from the sink or flush a toilet, the water just vents are a major component in a home's drainage system.