Coupling, Slip PVC Schedule 80 2-1/2" x 1-1/2" (829-291)

The 829-291 is a 2-1/2" x 1-1/2" PVC Schedule 80 reducer coupling in a slip x slip (socket x socket) configuration. The 2-1/2" socket end accepts plain-end pipe for solvent welding on the inlet side, while the 1-1/2" socket end does the same on the outlet — delivering a permanent, two-step size reduction in a single fitting without the need for bushings, intermediate adapters, or stacked components.

The 2-1/2" x 1-1/2" combination spans two nominal pipe sizes in a single body, making this a mid-range reduction fitting suited for systems where a more substantial step-down is required without going all the way to a small-bore outlet. The greater size differential compared to a one-step reducer means flow velocity increases more noticeably across the transition, which is worth accounting for in pressure-sensitive system designs — but for most standard distribution, irrigation, and process piping applications, the reduction is well within acceptable flow parameters.

Built to Schedule 80 wall thickness standards from rigid PVC compound, the 829-291 carries the elevated pressure ratings required for demanding industrial and commercial service. The all-slip design creates a fully solvent-welded, permanent joint on both ends with no threads to corrode, back out, or leak under pressure cycling or thermal movement.

Like all Schedule 80 PVC fittings, the 829-291 is fully resistant to corrosion, chemical attack, and biological fouling — with none of the weight, rust, or galvanic concerns associated with metal reducer fittings of equivalent pressure rating.

Specifications:

Industries & Applications:

• Industrial Process Piping — Reducing a 2-1/2" Schedule 80 process header to a 1-1/2" branch line or equipment inlet in a single permanent solvent-weld fitting
• Chemical Processing — Transitioning between pipe sizes in corrosive-fluid distribution systems where the two-step reduction and Schedule 80 chemical resistance are both required at the reduction point
• Water Treatment & Municipal — Connecting mismatched pipe sizes across pumps, inline equipment, and distribution headers in treatment plant and municipal infrastructure
• Irrigation Systems — Stepping down a 2-1/2" Schedule 80 mainline to a 1-1/2" zone header, valve assembly, or lateral distribution line on commercial or agricultural systems
• Commercial Plumbing — Reducing high-pressure supply piping from 2-1/2" to 1-1/2" in commercial mechanical systems where a compact, single-fitting transition eliminates stacked components
• Industrial HVAC & Cooling — Transitioning between pipe sizes in chilled water, cooling tower, or chemical treatment lines where Schedule 80 pressure ratings and a two-step reduction are both specified