Compression reducing coupling, polyethylene, PN 6 bar, d. 40 x 32

HDPE compression reducing coupling PN 6 bar, d 40 × 32 is a transition fitting designed for a reliable connection between a Ø40 mm pipe and a Ø32 mm pipe. It is one of the most in-demand formats for main-line distribution: when the primary line uses a larger diameter and you need a clean step-down to a smaller size while maintaining stable pressure, leak-tightness, and easy servicing.

The fitting is made of high-quality high-density polyethylene (HDPE). The material is strong, durable, and suitable for long-term use in utility and engineering networks. The inner surface of the connection is uniform and non-porous, so flow remains smooth with less turbulence and a noticeably lower risk of deposit build-up. The material composition contains no foreign components that could affect the taste or smell of water—an important factor for potable water systems and facilities with higher sanitary requirements.

Leak-tight operation at PN 6 bar is ensured by rubber sealing rings that tightly grip the pipe and provide strong resistance to leakage. A key advantage is the conical tightening mechanism: it compensates for slight size variations and pipe ovality up to ±0.5 mm. This is especially useful during installation when pipes may differ by batch or storage conditions—the joint seats evenly and predictably, with fewer risks after commissioning.

A corrosion-resistant reinforcing ring is included to improve long-term tightness and stability under temperature fluctuations. UV resistance makes the fitting a good choice for outdoor pipelines, manholes, greenhouses, and irrigation lines. UV stability also helps reduce the risk of algae and bacteria growth in sunlit sections of the system. The blue/black color is practical, easy to spot, and convenient for on-site identification.

Suitable for polyethylene and polyethylene terephthalate pipes.

Typical applications for the 40×32 reducer:

potable water networks and food-related circuits;

irrigation and watering systems, greenhouses;

industrial and domestic high-pressure sewer networks;

fire-fighting pipelines and technical water supply.

If you need a dependable 40×32 HDPE reducer with fast, welding-free installation and a high margin of leak-tightness, this PN 6 bar compression fitting is a practical solution for professional installation and repairs.