Coupling, Slip x Slip PVC Schedule 80 2" (829-020)

The 829-020 is a 2" PVC Schedule 80 Slip Coupling with socket ends on both faces, designed to join two lengths of 2" Schedule 80 PVC pipe with a permanent solvent-welded connection. The coupling is the fundamental straight-run fitting in any PVC pressure piping system — extending a run, connecting pipe sections of different lengths, closing out a measured run, or repairing a damaged pipe section by cutting out the affected length and coupling in a replacement piece. At 2", this coupling handles one of the most common supply-main and process-line diameters in commercial and industrial Schedule 80 applications, where a reliable, high-integrity straight joint is required without directional change or size transition.

Manufactured from dark gray PVC Schedule 80 compound and compliant with ASTM D2467, this coupling carries NSF/ANSI 61 certification for potable water contact. The heavier Schedule 80 wall thickness provides the elevated pressure rating and chemical resistance required in industrial process environments, chemical handling lines, and high-demand commercial systems where Schedule 40 couplings are undersized for the service conditions or insufficiently resistant to the process media. The thicker wall also provides greater structural integrity at the socket joint itself — a meaningful advantage at a straight-run connection point that may be subject to thermal expansion stress, pipe movement, or sustained operating pressure over long service intervals.

The internal pipe stop — a center ridge within the coupling body — controls pipe insertion depth from each end, ensuring consistent pipe seating and predictable joint geometry during installation. Both pipe ends insert to the stop from opposite faces, and both joints are made simultaneously with solvent cement before the coupling is slid into final position. This center-stop geometry ensures that neither pipe end is under-inserted into its socket — a common cause of joint weakness at larger coupling sizes — and that the cement distribution across the full socket depth is consistent on both sides of the fitting.

Solvent cement installation follows standard Schedule 80 procedures on both socket ends. At 2", full-circumference primer penetration across the entire socket depth and consistent cement coverage on both the pipe OD and the socket ID are important to joint integrity — at this diameter, thin or uneven cement application is more likely to produce a void in the joint interface than at smaller sizes where cement surface tension distributes more readily. Apply a Schedule 80-compatible PVC cement per ASTM D2564 to both the pipe end and the socket, assemble with a quarter-turn while maintaining firm pressure, and hold through the recommended cure period before allowing pipe movement or applying system pressure. Consult the manufacturer's published technical data for the confirmed working PSI at the 2" 829-020 before finalizing system design.

Specifications

Industries & Applications

• Industrial Process Piping — Straight pipe run extensions and pipe section connections on 2" Schedule 80 process water, cooling water, chemical transfer, and utility water lines in manufacturing, refining, and industrial facility piping where Schedule 80 pressure rating and chemical resistance are specified throughout the system
• Chemical Handling — Straight-run joints in corrosion-resistant 2" Schedule 80 PVC chemical distribution, reagent transfer, and acid or alkali handling lines where the coupling body's chemical resistance must match the pipe and the joint must maintain integrity under sustained chemical exposure and operating pressure
• Water Treatment & Purification — Pipe run connections in 2" Schedule 80 distribution and treatment lines in municipal and industrial water treatment facilities where NSF/ANSI 61 potable water listing is required and the system operating pressure demands Schedule 80 wall thickness at every joint in the run
• Commercial Plumbing — Straight coupling joints in 2" Schedule 80 supply mains, mechanical room distribution runs, and equipment connection headers in large commercial facilities where the system pressure specification or chemical exposure requirement exceeds Schedule 40 capability
• Irrigation & Agriculture — Pipe run connections in 2" Schedule 80-rated high-pressure agricultural, turf, and golf course irrigation mains where operating pressures exceed Schedule 40 ratings or chemical injection compatibility requires Schedule 80 throughout the distribution system
• HVAC & Mechanical Systems — Straight-run joints in 2" Schedule 80 chilled water, condenser water, and cooling tower makeup piping where PVC is specified for corrosion resistance and the system operating pressure requires the elevated wall thickness that Schedule 80 provides over Schedule 40 at this diameter
• Pipe Repair & System Modification — Repair coupling for damaged or failed sections of existing 2" Schedule 80 PVC pipe runs — the failed section is cut out, the pipe ends are squared and deburred, and the 829-020 is used to couple in a replacement pipe section without requiring any fittings beyond the coupling itself at the repair point