External sewer reduction MAGNAPLAST KGR 160/110 mm (model 21280)

MAGNAPLAST KGR 160/110 mm (model 21280) external sewer reduction is a rigid plastic transition designed to join 160 mm and 110 mm external drainage pipes. Intended for use in stormwater and soil drainage systems, this fitting provides a stable, dimensionally accurate connection between different pipe diameters for underground or above-ground installations in residential and commercial projects.

Advantages

The reduction fitting is made from durable plastic that resists corrosion and typical chemical exposure in drainage applications. Its dimensional design ensures a snug fit with standard external drainage pipes, reducing risk of leakage at the transition point. The smooth interior profile facilitates uniform flow and minimises sediment buildup. The component is lightweight, easy to handle on site, and compatible with common assembly techniques used in external sewer systems.

Suitable for

• Connecting 160 mm to 110 mm external stormwater pipes
• Soil and wastewater drainage where pipe diameter transition is required
• Underground and above-ground drainage installations in residential buildings
• Commercial drainage systems requiring reliable diameter reduction

Key specifications

• Material: rigid plastic suitable for external drainage use
• Outer diameter compatibility: designed to join 160 mm and 110 mm external pipes
• Application environment: stormwater and soil drainage systems, underground or above-ground
• Flow profile: smooth internal surface to promote flow and reduce sedimentation
• Installation: suitable for standard external drainage assembly methods

How to use

Select the reduction fitting at the point where a transition from 160 mm to 110 mm pipe is required. Prepare pipe ends by cleaning and ensuring they are free of debris and damage. Insert the larger pipe into the 160 mm side and the smaller pipe into the 110 mm side according to the manufacturer's recommended insertion depth for the pipe system in use. Use appropriate sealing methods or couplings if the installation specification requires additional gaskets or adhesive. After assembly, verify alignment and slope to maintain correct drainage flow.

Usage recommendations

Store the fitting protected from prolonged UV exposure and extreme temperatures before installation. For best performance, inspect joints after initial system filling and during routine maintenance to ensure seals remain intact and there is no displacement at the transition point.