Coupling, Slip x Slip PVC Schedule 80 3" (829-030)

The 829-030 is a 3" PVC Schedule 80 coupling with two slip (socket) ends, designed to join two sections of 3" PVC pipe in a straight, inline configuration using solvent cement welding per ASTM D2564. Both socket ends accept standard 3" PVC pipe, producing a permanent, pressure-rated joint at each end and creating a continuous, leak-free pipeline run without mechanical fasteners or gaskets.

Manufactured from rigid, dark gray PVC compound conforming to ASTM D1784 cell classification requirements, the Schedule 80 wall construction delivers higher pressure ratings and greater mechanical strength than Schedule 40 equivalents at the same pipe size. This makes the 829-030 the correct choice for high-pressure distribution systems, chemical process piping, and any Schedule 80 installation where maintaining full system pressure integrity at every joint is required — including repair and extension work on existing Schedule 80 lines where substituting a Schedule 40 coupling would create an underrated weak point in the system.

As one of the most fundamental fittings in any PVC piping system, the coupling serves three primary functions: joining two pipe sections end to end in new construction, extending an existing pipeline, and repairing a damaged pipe section by cutting out the compromised segment and coupling in a replacement length. The all-slip configuration means both joints are permanent solvent welds — appropriate for installations where long-term, maintenance-free performance is the priority. For applications requiring a union-style connection that can be broken and reassembled, a PVC Schedule 80 union should be considered instead.

Specifications:

Industries & Applications:

• Industrial Process Piping — Joining and extending 3" Schedule 80 pipe runs in high-pressure chemical distribution, cooling water loops, and process fluid systems where full Schedule 80 pressure integrity must be maintained at every connection point
• Chemical Processing — Inline pipe joints in corrosive service piping handling acids, caustics, and aggressive industrial fluids where all-PVC construction provides both chemical resistance and the required pressure safety margin
• Municipal Water & Wastewater — Pump station and treatment facility piping where 3" Schedule 80 pipe sections must be joined, extended, or repaired while maintaining system pressure ratings
• Irrigation & Agriculture — Joining 3" pipe runs in high-pressure mainline irrigation systems where Schedule 80 wall thickness is specified for added durability and pressure performance
• HVAC & Mechanical — Inline coupling of 3" Schedule 80 pipe in chilled water, condenser water, and process cooling systems in commercial mechanical rooms
• Aquaculture & Water Treatment — Joining and extending pipe runs in recirculating system headers and supply manifolds requiring corrosion-resistant, high-pressure rated connections throughout