Coupling, Slip PVC Schedule 80 2" x 3/4" (829-248)

The 829-248 is a 2" x 3/4" PVC Schedule 80 reducer coupling in a slip x slip configuration, providing a straight inline size reduction from a 2" pipe or fitting down to a 3/4" pipe or fitting via solvent cement bonding at both ends. The larger 2" slip socket accepts standard 2" pipe or a spigot-end fitting, while the 3/4" slip socket transitions the line down to the smaller diameter — in a compact, inline profile with no elbows, offsets, or directional changes.

At a three-step size reduction — 2" down to 3/4" — the 829-248 handles one of the larger cross-sectional area differentials available in the 829-series 2" inlet family. The significant size differential between the two ports means this fitting is purpose-built for applications where a large-diameter supply or distribution header feeds a small-bore secondary function — instrument taps, chemical injection points, sampling connections, low-volume branch feeds, and other applications where the downstream circuit operates at a fundamentally different flow scale than the 2" mainline.

Consolidating this multi-step reduction into a single fitting rather than stepping down through intermediate reducer couplings or bushings keeps the assembly compact, minimizes joint count along the run, and eliminates the intermediate pipe sections and fittings that a staged reduction approach would require. In tight mechanical spaces, buried installations, or systems where minimizing the number of joints is a design priority, the single-fitting approach of the 829-248 is a meaningful practical advantage.

The all-slip design bonds both ports permanently with solvent cement, producing a clean, monolithic inline joint with no mechanical connections, threaded interfaces, or O-rings to maintain. This makes the 829-248 well-suited for buried systems, enclosed mechanical spaces, and any installation where joint permanence and long-term leak integrity take priority over the ability to disassemble and modify the connection later. Where future access to the reduced-diameter outlet is anticipated — for instrument changes, valve service, or branch reconfiguration — a reducer coupling paired with a threaded adapter or union at the small-bore end should be evaluated as an alternative approach.

Schedule 80's thicker wall construction delivers higher pressure ratings and greater resistance to mechanical stress and chemical exposure than Schedule 40, making this reducer coupling appropriate for demanding industrial, chemical, and process piping environments. The gray color is the standard Schedule 80 identifier, providing clear visual differentiation from white Schedule 40 components in mixed systems.

Solvent cement installation follows standard PVC practice — clean, prime, and cement both mating surfaces per ASTM D2564 procedures. Note that the two socket sizes on this fitting differ significantly — apply cement to each socket and its mating pipe end separately, ensuring full coverage on both the larger 2" socket and the smaller 3/4" socket before assembly. Ensure each pipe end is fully seated in its respective socket before the cement sets.

Specifications:

Industries & Applications:

The 829-248 reducer coupling is used across Schedule 80 systems requiring a permanent, straight inline size reduction from a 2" mainline or header down to a 3/4" small-bore secondary circuit, tap, or instrument connection:

• Industrial Processing — Large-to-small inline reductions at instrument tap points, chemical injection stubs, and low-volume secondary feed connections off 2" process piping headers — where a single compact fitting bridges the full size differential between the mainline and the small-bore downstream function
• Chemical Handling — Permanent solvent-weld reductions in acid, alkali, and reagent distribution systems where a 2" supply or distribution line connects to 3/4" metering equipment, injection quills, sampling valves, or secondary feed circuits requiring a significant diameter reduction in a single fitting
• Water & Wastewater Treatment — Size reductions in treatment plant piping at instrument connection stubs, chemical dosing tap points, and low-volume monitoring connections off 2" distribution headers where a compact permanent transition from mainline to small-bore is required
• Irrigation & Agriculture — Reducing a 2" pressurized mainline or zone header down to 3/4" at fertigation injector connections, pressure gauge stubs, drip lateral supply transitions, and other small-bore branch points in field and greenhouse irrigation systems
• Commercial & Industrial Plumbing — Inline size reductions in cold water supply, equipment feed lines, and mechanical room piping where a 2" header or supply run must connect to 3/4" branch circuits, equipment connections, or instrument ports in Schedule 80 construction
• Aquaculture & Aquatics — Size reductions from 2" recirculating system headers down to 3/4" aeration supply lines, sensor connections, and small-bore secondary circuits in permanent solvent-weld installations
• Pool & Spa — Inline reductions in commercial pool mechanical room piping where 2" supply or distribution lines connect to 3/4" chemical feed equipment, instrument stubs, or small-bore branch connections
• HVAC & Cooling Systems — Size reductions in chilled water and process cooling distribution circuits where a 2" primary supply header must connect to 3/4" secondary branch circuits, chemical treatment feed points, or instrument connections in Schedule 80 PVC construction