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Cleanout
What is Cleanout?
Cleanout, An access point in plumbing systems that allows for inspection, cleaning, and maintenance of drain and sewer lines
Description
Cleanout is an access point installed in plumbing drainage systems that provides entry for inspection, cleaning, and maintenance of drain and sewer lines through removable plugs or covers. These essential plumbing components enable routine maintenance, emergency repairs, and system troubleshooting without requiring extensive excavation or demolition, making them critical for long-term plumbing system functionality and code compliance.
Purpose includes providing maintenance access, enabling system cleaning, facilitating repairs, and ensuring code compliance. Quality cleanout installation is essential for plumbing system serviceability and preventing costly emergency repairs.
Types include floor cleanouts for interior access, exterior cleanouts for outdoor systems, two-way cleanouts for bidirectional access, and specialty cleanouts for unique applications. Each type serves specific access requirements and installation conditions.
FAQs
Where are cleanouts required in plumbing systems?
They are required at building sewer connections, changes in direction, intervals along horizontal runs, and other locations specified by plumbing codes.
Can cleanouts be installed inside buildings?
Yes, interior floor cleanouts allow access while maintaining a finished appearance and are commonly used in basements and utility spaces.
What size cleanout do I need?
Cleanouts are typically the same size as the pipe they serve, with a minimum of 3 inches for most applications and larger sizes for main sewers.
How do you open a stuck cleanout plug?
Penetrating oil, heat, or specialized removal tools can be used, while avoiding excessive force that could damage threads or fittings.
Do cleanouts need to be marked?
Yes, codes require cleanouts to be identifiable and protected from damage so they remain accessible for maintenance.
Can cleanouts leak?
Yes, leaks can occur if plugs are loose, threads are damaged, or seals fail; proper installation and maintenance reduce this risk.
How often should cleanouts be inspected?
Most systems should be inspected annually, with more frequent inspections for commercial or high-use plumbing systems.
Fun Fact
Fun Fact: The first standardized cleanouts were developed in the 1920s as cities began requiring access points for sewer maintenance, revolutionizing urban drainage system management.
Links
CSI Code
22 13 16
NAHB Code
2200







