Compression reducing coupling, polyethylene, PN 6 bar, d. 90 x 75

HDPE compression reducing coupling PN 6 bar, d 90 × 75 is a transition fitting designed to reliably connect Ø90 mm and Ø75 mm pipes without welding, solder-type couplers, or complex tools. It is a convenient solution when you need a controlled step-down from a main diameter to a smaller one while maintaining leak-tightness, stable flow, and easy future servicing.

The fitting is made from high-quality high-density polyethylene (HDPE). The material is corrosion-free, handles operational loads well, and is suitable for long-term use in engineering networks. Its inner surface is uniform and non-porous, which reduces deposit build-up, keeps the internal bore stable for longer, and makes system hydraulics more predictable. The design contains no foreign substances that could affect the taste or odor of water—especially important for potable water lines and facilities with higher requirements for media cleanliness.

The reliability of the 90×75 transition is ensured by a well-engineered compression design:

Rubber sealing rings create a tight clamping force and provide strong leak resistance 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 helping achieve a tight connection “from the first try.”

A corrosion-resistant reinforcing ring strengthens the joint and maintains long-term tightness under temperature fluctuations, extending service life for years.

An additional benefit is UV resistance: the fitting is suitable for outdoor pipeline sections, manholes, chambers, greenhouse installations, and irrigation systems where components may be exposed to sunlight. UV stability also helps reduce the risk of algae and bacteria growth in sunlit parts of the system. The blue/black color makes the product easy to spot on site and convenient to identify during maintenance.

Compatibility: suitable for polyethylene and polyethylene terephthalate pipes.

Typical applications for the 90×75 PN 6 reducer:

main and distribution lines for potable and technical water supply;

irrigation and greenhouse systems (Ø90 → Ø75 transition);

industrial and domestic high-pressure sewer networks;

fire-fighting pipelines and technical circuits.

Fast, straightforward installation: make a clean straight cut, clean the edge, insert the pipe fully, and tighten. The result is a reliable 90×75 transition with high leak-tightness and stable system performance—without welding and without unnecessary costs.