Plumbing vents, also known as vent stacks or air inlets, are an indispensable part for your plumbing drain system. These vents allow air into your drainage system to create proper pressure in the pipes, allowing the wastewater to flow smoothly into the septic tank or sewer pipes. Two processes work together; the one side of plumbing vent allows the liquid out, and one side controls airflow so the liquid runs out smoothly.
The main plumbing drain line is located in a basement or crawlspace coming straight down from your house. It is mostly made of either cast iron or, in modern homes, black PVC pipe. When the toilet is flushed and you hear a large draining sound and water flows through the plumbing pipes going to the septic tank or city sewer.
The other side of the system helps regulate the pressure. Proper pressure is essential in the plumbing system as it helps make smooth water flow in the pipe. Also, the air inlet is the outlet for sewer gases and prevent it from entering the home.
Can plumbing vents go down? Generally, plumbing vents have no curves and go straight up and down. These vents will need periodic inspection as it can be clogged or damaged. Clogged or damaged vents will affect the drain's force of suction resulting to slow drainage and gurgling noise coming from different drain openings. Also, sewer gases may enter the home and exposure to low levels of hydrogen sulphide may cause eye inflammation, respiratory tract irritation and other symptoms such as nervousness, dizziness, nausea, headache, and drowsiness.