Compression reducing coupling, polyethylene, PN 6 bar, d. 90 x 63

HDPE compression reducing coupling PN 6 bar, d 90 × 63 is a heavy-duty transition adapter designed to reliably connect Ø90 mm and Ø63 mm pipes in main and distribution lines. If you need a leak-tight step-down from a larger diameter to a smaller one—without welding, with fast installation, and stable system performance—this fitting covers the job end to end.

The body is made of high-quality high-density polyethylene (HDPE). The material is engineered for utility networks, resistant to water exposure, and free from corrosion. Its inner surface is uniform and non-porous, so flow remains smooth, deposits are less likely to stick, and the pipeline retains its flow capacity for longer. The product contains no foreign substances that could affect the taste or odor of water, making it suitable for potable water lines and circuits where media cleanliness is critical.

Leak-tightness and joint reliability are delivered by a well-designed compression structure:

Rubber sealing rings provide strong resistance to leaks and confident operation at PN 6 bar.

The conical tightening mechanism eliminates typical installation imperfections by compensating for size differences and pipe ovality up to ±0.5 mm. This is especially valuable when pipes come from different batches or have slight tolerances—the joint seats firmly and predictably.

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

The fitting is UV-resistant, making it an excellent choice for outdoor routes, manholes, greenhouses, and irrigation systems. UV stability also helps reduce the risk of algae and bacteria growth in sunlit sections. The blue/black color makes identification and maintenance easier on site.

Compatibility: suitable for polyethylene and polyethylene terephthalate pipes.

Typical applications for the 90×63 PN 6 reducer:

mains and distribution in potable and technical water systems;

irrigation and watering networks (Ø90 → Ø63 transition);

industrial and domestic high-pressure sewer networks;

fire-fighting pipelines.

Welding-free installation: make a clean straight cut, insert the pipe fully, tighten—and you get a reliable, leak-tight 90×63 transition with minimal labor. If you need a quality compression fitting for stable pipeline performance, choose the PN 6 bar d 90×63 coupling.