JUNCTION 75MM 90D SV PL

The soil and vent junction is a critical component of a plumbing system in buildings. It's where the waste pipes from sinks, toilets, and other fixtures meet the vertical soil stack that extends up through the building and connects to the sewer or septic system.

Typically, the soil and vent junction is located in the basement or lowest level of the building. It serves several important functions:

1. Waste Disposal: Waste from various fixtures in the building flows into the soil and vent junction. This includes wastewater from sinks, showers, bathtubs, and toilets.

2. Ventilation: The soil stack provides a pathway for sewer gases to vent out of the building. The vent prevents the buildup of pressure in the plumbing system and helps to maintain proper drainage by allowing air to enter the system, preventing vacuums that could inhibit proper drainage.

3. Connection: The junction connects horizontal waste pipes from fixtures to the vertical soil stack. This connection is typically made with fittings designed to maintain proper slope and facilitate smooth flow of waste.

4. Prevention of Contamination: Properly designed soil and vent junctions prevent contamination of potable water by ensuring that waste flows away from the building and into the sewer or septic system without backups or leaks.

5. Access for Maintenance: The junction often includes access points or cleanouts that allow plumbers to inspect and maintain the system, such as clearing clogs or repairing damaged pipes.

The design and construction of soil and vent junctions must adhere to building codes and plumbing standards to ensure proper function and compliance with health and safety regulations. Improperly designed or maintained junctions can lead to drainage issues, foul odors, and even health hazards from exposure to sewer gases.