Reducer Coupling, Slip x Slip PVC Schedule 80 2" x 1-1/2" (829-251)

The 829-251 is a Schedule 80 PVC reducer coupling with slip socket connections on both ends, designed to transition a 2-inch mainline to a 1-1/2-inch continuation or branch line via solvent cement joints. The 2" x 1-1/2" pairing represents one of the most frequently specified reducing coupling dimensions in industrial and commercial PVC piping — a practical single nominal step reduction that appears throughout pump systems, filtration assemblies, chemical process headers, and utility water distribution wherever flow is redistributed between adjacent pipe sizes.

Both socket ends are bored to accept standard Schedule 80 pipe, ensuring full solvent weld engagement depth and a pressure-rated joint when properly primed and cemented. Schedule 80 wall thickness delivers a meaningfully higher pressure rating and greater mechanical durability than Schedule 40 equivalents, making this fitting appropriate for pressurized service lines, chemical feed systems, and applications where pipe wall strength and joint integrity are specified by design.

Gray PVC construction provides excellent resistance to a wide range of acids, alkalis, salts, and industrial chemicals, with no corrosion risk in continuously wet or chemically aggressive service. This fitting is manufactured to ASTM D2467 dimensional standards from virgin PVC compound conforming to ASTM D1784 Cell Classification 12454.

Specifications:

Pressure ratings are for water service at 73°F. Derate for elevated temperatures and aggressive chemical service per manufacturer guidelines.

Industries & Applications:

The 829-251 Schedule 80 reducer coupling serves a wide range of commercial and industrial applications requiring a reliable, single-step 2" to 1-1/2" in-line transition:

• Industrial Process Piping — Step-downs on chemical distribution headers, reagent delivery loops, and recirculation systems transitioning from 2-inch mains to 1-1/2-inch service branches
• Chemical Processing & Water Treatment — Chlorination, acid dosing, caustic feed, and polymer injection lines where solvent-welded Schedule 80 joints provide superior performance over threaded connections in corrosive service
• Pump Discharge & Filtration Systems — Transition fittings between 2-inch pump outlets and 1-1/2-inch downstream piping on packaged pump skids, filter housings, and pressure vessels
• Municipal & Commercial Plumbing — Utility water mains, mechanical room piping, and system headers where a tight single-step reduction is required and Schedule 80 pressure ratings are specified
• Agricultural Irrigation — Main-to-zone transitions on pressurized irrigation headers stepping down from 2-inch supply lines to 1-1/2-inch zone distribution mains
• HVAC & Cooling Systems — Chemical treatment feed lines and condenser water piping transitions where non-metallic construction provides long-term corrosion resistance
• Aquaculture & Commercial Aquatics — Recirculating aquaculture system (RAS) headers, pool equipment rooms, and commercial spa plumbing where continuous chemical exposure demands chemically inert, pressure-rated fittings