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The PASCO 1866 is a 2.5-inch slotted brass cleanout plug designed for use in drain, waste, and vent (DWV) plumbing systems. This fitting provides secure access to cleanout points in soil and waste piping, allowing service technicians to clear obstructions without dismantling sections of pipe. The slotted head accepts a flat-blade screwdriver for installation and removal. Constructed from brass, the plug delivers corrosion resistance and long service life in both indoor and underground applications. Plumbers and pipefitters install this plug as part of new construction or replacement service work on residential and light commercial drainage systems.
This cleanout plug is sized at 2.5 inches and meets UPC (Uniform Plumbing Code) standards, making it suitable for use in jurisdictions that enforce UPC-based inspection requirements. It is installed at cleanout fittings in horizontal drain runs, base of stack cleanouts, and building drain terminations where periodic access for rodding or inspection is required. The slotted drive makes it compatible with standard hand tools carried by most service plumbers.
Designed as an OEM-style replacement or new-installation cleanout plug for 2.5-inch UPC-compliant cleanout fittings in residential and light commercial DWV drainage systems.
Installation is performed by a licensed plumber in accordance with the Uniform Plumbing Code (UPC) and local amendments. Before removing or replacing a cleanout plug, confirm the upstream drainage system is not under active flow and that any associated water supply is shut off if nearby work is required. Use an appropriate pipe thread sealant or PTFE tape on the threads before installing to prevent leaks. Do not overtighten, as brass threads can be damaged by excessive force.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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