Long Socket Coupling, Slip x Slip PVC Schedule 40 2" (428-020)

This 2" Schedule 40 PVC Long Socket Coupling (Slip x Slip) provides an extended-socket-depth solvent-cement coupling for field pipe repair and splicing applications in 2" all-socket PVC piping systems — delivering the deeper socket engagement needed to slide fully onto one in-situ pipe end, reposition over the cut joint, and complete a permanent repair without removing the downstream fitting assembly. Constructed in white Schedule 40 PVC, it offers the corrosion resistance and chemical compatibility of standard Schedule 40 socket fittings while providing the extended socket depth that makes field pipe repairs practical at 2" mainline sizes where a standard coupling would require a pipe section on both sides of the joint and cannot be positioned over a single fixed pipe end.

Both 2" slip socket ends are sized to accept 2" PVC pipe for permanent solvent-cement bonds, with the extended socket depth providing additional engagement length relative to the standard 429 series coupling at the same nominal size. In a typical repair scenario, the long socket coupling is slid entirely onto one accessible pipe end — taking advantage of the extended socket depth to clear the cut joint location — before being repositioned and centered over the repair joint where both pipe ends receive solvent cement and the fitting is slid back into final position simultaneously engaging both pipe ends in a single motion. This installation approach enables a permanent, pressure-rated repair joint on a fixed in-situ pipe section without requiring access to both pipe ends simultaneously from the start of the operation — a critical advantage in buried, wall-penetrating, or otherwise constrained 2" mainline repair scenarios. For standard inline joining applications where pipe sections are freely movable and both ends can be presented to a fitting simultaneously, the standard 429 series coupling remains the appropriate choice; the 428 series long socket coupling is specifically engineered for repair and constrained-access splicing scenarios where the extended socket depth provides the necessary field repositioning capability.

Rated to approximately 280 psi at 73°F, this coupling is suited for standard commercial and light industrial water distribution and irrigation service within its pressure class. Its PVC composition provides excellent resistance to corrosion, scale, chlorinated water, and a broad range of chemical exposures. NSF/ANSI 61 listing confirms suitability for potable water contact.

Apply solvent cement to both the pipe end exterior and the fitting socket interior on each side per ASTM D2564 procedures, using a primer appropriate for the pipe and fitting schedule. In repair installations, apply cement to both ends and the fitting sockets in rapid succession before sliding the fitting from its pre-positioned location on one pipe end back over the joint to engage both ends simultaneously — the extended socket depth provides the necessary travel distance for this repositioning motion. Insert each pipe end fully into its respective socket and maintain a quarter-turn during assembly for even cement distribution. Allow adequate cure time before pressurizing the system, and derate pressure ratings for elevated temperatures per published derating curves.

Specifications:

Industries & Applications:

• Irrigation & Water Distribution — Repairs broken, cracked, or damaged 2" PVC socket mainline sections in agricultural and municipal irrigation systems where the extended socket depth allows the coupling to be pre-positioned on one accessible in-situ pipe end and repositioned over the repair joint without removing the downstream fitting assembly — the most common large-diameter repair coupling application in buried and partially constrained irrigation mainline systems
• Commercial Plumbing — Splices repaired or replaced 2" PVC socket pipe sections in commercial building water distribution systems, riser assemblies, and exposed distribution runs where wall penetrations, structural constraints, or tight mechanical spaces prevent access to both pipe ends simultaneously and the extended socket depth enables a single-motion repair joint completion
• Industrial Process Piping — Provides a field-repairable permanent joint on damaged 2" socket PVC process water headers, cooling water mains, and distribution assemblies in water treatment, chemical processing, and manufacturing facilities where repair access is limited to one side of the damaged pipe section and the standard coupling cannot be installed without removing additional downstream piping
• Pump Station Assemblies — Repairs 2" socket PVC pipe runs at pump station discharge headers, bypass line sections, and distribution main entries in pump station installations where close-quarters equipment layouts restrict simultaneous access to both pipe ends at the repair joint location and the long socket coupling enables repair without disassembling adjacent pump or valve connections
• Water Treatment & Aquaculture — Used to repair damaged 2" socket PVC pipe sections in recirculating system distribution mains, filter feed headers, and tank supply lines where NSF/ANSI 61 compliance is required and the extended socket depth enables field repair at constrained joint locations without draining or disassembling the broader system assembly
• HVAC & Mechanical Systems — Repairs 2" socket PVC pipe sections in cooling tower supply mains, chilled water distribution runs, and chemically treated water system piping within the Schedule 40 pressure class where mechanical equipment, structural elements, or panel enclosures restrict access to both pipe ends at the repair joint location