A vent header is a main vent pipe that collects and connects multiple individual vents in a plumbing system. It runs horizontally or vertically, depending on the building’s layout, and directs air flow to the main vent stack or outside, ensuring proper venting for all connected fixtures. Vent headers are crucial for maintaining pressure balance within the drainage system, preventing traps from being siphoned dry and ensuring smooth wastewater flow. Proper installation and sizing of vent headers are necessary to maintain compliance with plumbing codes and prevent ventilation issues.
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