What is the maximum distance a vent can be from a fixture trap?

The maximum distance a vent can be from a fixture trap is specified by plumbing codes to ensure proper drainage and ventilation of the plumbing system. In this context, the correct distance is 6 feet. This distance is established to prevent the trap from being siphoned dry due to negative pressure, which can occur if the venting is insufficient.

When a fixture is installed, it needs to be properly vented to allow air into the drainage system. This prevents the development of a vacuum that can pull water from the trap, leading to potential sewer gas leaks and fixture odors. A vent positioned within 6 feet of a fixture trap ensures that the fixture can drain effectively while maintaining an adequate air balance in the drainage system.

In plumbing practice, adhering to these regulations is crucial to uphold health and safety standards while ensuring that the system functions as intended. Understanding this maximum distance is vital for anyone engaged in plumbing work to maintain compliance with industry standards and local plumbing codes.