PVC Repair Pipe Fitting Reducing Tee Reducer Drain Pipe Fittings White 50-200mm

Measure the outer diameter (OD) of your existing pipe using calipers or a wrap-around tape. The fitting size listed (e.g., 110mm) refers to the pipe OD it accepts. For reducing tees, the first dimension is the run (straight-through) size and the second is the branch size — for example, a 110×50mm tee has a 110mm run and a 50mm branch outlet.

No. These fittings are rated for DWV (drain, waste, and vent) applications only, which are gravity-flow, non-pressure systems. Do not use them on cold or hot water supply lines, which require pressure-rated fittings marked to the relevant standard for your region.

Long-arm tees have an extended branch socket that provides more insertion depth and a longer bonding surface, making them suitable for situations where additional joint strength or alignment clearance is needed. Short-arm tees have a more compact branch socket, useful in confined spaces where a long arm would interfere with adjacent structures.

Oblique tees have a branch outlet set at an angle (typically 45°) rather than perpendicular (90°) to the run. This configuration is used when a drain branch needs to enter the main line at an angle to improve flow direction, reduce turbulence, or fit within a specific structural layout.

Rigid PVC has good resistance to household drain cleaners, detergents, dilute acids, and alkalis typically found in residential and light commercial drain systems. However, concentrated solvents, ketones, or aromatic hydrocarbons can attack PVC and should not be discharged through these fittings. Always check chemical compatibility if your application involves industrial effluents.

These fittings are suitable for above-ground and below-ground DWV drain applications in typical residential and commercial settings. For buried installations, ensure the trench is properly bedded and backfilled to prevent point loading on the fitting body. Prolonged direct UV exposure may cause surface discoloration over time; for exposed outdoor runs, consider UV-protective paint or conduit shielding.

Using a PVC primer before solvent cement is strongly recommended and required by many plumbing codes. Primer cleans and softens the pipe and socket surfaces, allowing the cement to create a stronger molecular bond. Skipping primer may result in a weaker joint that is more susceptible to leaks, particularly in larger diameter fittings where surface area and alignment tolerances are greater.