Compression reducing coupling, polyethylene, PN 6 bar, d. 110 x 90

HDPE compression reducing coupling PN 6 bar, d 110 × 90 is a transition fitting designed to reliably connect Ø110 mm and Ø90 mm pipes in main and distribution pipelines. It is ideal when you need a clean step-down to a smaller diameter without welding, with minimal labor, and with confident leak-tightness from the very first system start-up.

The fitting is made from high-quality high-density polyethylene (HDPE). The material is corrosion-free, engineered for long service life, and performs well in water and technical media. Its inner surface is uniform and non-porous—important for maintaining stable flow capacity: deposit build-up risk is reduced, flow remains smoother, and the system retains its design parameters for longer. The product contains no foreign substances that could affect the taste or odor of water, making the 110×90 reducer suitable for potable water networks and engineering lines where media cleanliness is critical.

Leak-tightness is ensured by a well-designed compression structure:

Rubber sealing rings provide strong resistance to leaks at the PN 6 bar working pressure.

The conical tightening mechanism compensates for minor pipe geometry deviations—size differences and ovality up to ±0.5 mm—eliminating typical installation imperfections and improving joint reliability.

A corrosion-resistant reinforcing ring strengthens the assembly and supports long-term tightness under temperature fluctuations, which is especially important for year-round operation.

The fitting is UV-resistant, so it can be used on outdoor pipeline sections, manholes, chambers, greenhouse installations, and irrigation systems. UV stability helps reduce the risk of algae and bacteria growth in sunlit sections. The blue/black color is practical for identification and on-site maintenance.

Compatibility: suitable for polyethylene and polyethylene terephthalate pipes.

Applications: potable and technical water supply networks, irrigation and watering, industrial and domestic high-pressure sewer networks, fire-fighting pipelines.

If you need a dependable 110×90 PN 6 HDPE compression reducer that installs quickly, holds tightness, and is built for long-term stable performance, this coupling is a practical solution for installing and repairing main pipelines.