PVC transition fitting InstalPlast 160/110 Model 8029603 for drainage pipe connection

PVC transition fitting InstalPlast 160/110 Model 8029603 for drainage pipe connection made from rigid PVC-U provides a reduction from 160 mm to 110 mm for external drainage systems. It is intended for non-pressurized wastewater transport with pH 2–12 and temperatures up to +40°C (short-term up to +60°C). The fitting is orange-brown, has a smooth inner surface to reduce scale and deposits, and uses a socket with a siliconeized seal for a tight, easy installation.

Advantages

The InstalPlast transition fitting is manufactured from non-plasticized PVC-U, offering high strength, impact resistance and chemical resistance. Its smooth surface prevents buildup of sediment, while the siliconeized seal in the socket ensures a reliable, watertight connection and straightforward assembly without special tools.

Suitable for

• Reduction of external drainage or sewer pipe diameter from 160 mm to 110 mm
• Underground gravity wastewater systems in roads, embankments and utility corridors
• Residential and commercial drainage installations requiring pipe-size adaptation

Key specifications

• Brand: InstalPlast
• Model / MPN: 8029603
• EAN: 8600198029603
• Material: rigid PVC-U (non-plasticized polyvinyl chloride)
• Connection sizes: 160 mm → 110 mm
• Operating pH range: 2–12
• Temperature range: up to +40°C (short-term up to +60°C)
• Color: orange-brown

How to use

Ensure pipe ends are clean and free of debris. Insert the smaller-diameter pipe into the 110 mm socket and the larger pipe into the 160 mm side, pushing until the siliconeized seal seats fully. Check alignment and ensure both pipes are properly supported to avoid stress on the joint. No special adhesives are required for the socketed connection; follow local installation codes for bedding and backfill when used in underground applications.

Usage recommendations

Use this transition fitting only in non-pressurized gravity drainage systems within the specified pH and temperature limits. Avoid exposure to temperatures or chemicals outside the stated ranges. For buried installations, ensure correct bedding, compaction and protection according to local standards to prevent deformation or joint stress.