Compression reducing coupling, polyethylene, PN 6 bar, d. 25 x 20

The polyethylene compression reducing coupling PN 6 bar, d 25 × 20 (HDPE), is a reliable compression fitting for a neat diameter transition in piping systems. It is suitable for polyethylene and polyethylene terephthalate pipes when you need leak-tightness without welding—fast installation with predictable results.

The body is made of high-quality high-density polyethylene (HDPE) with a uniform, non-porous inner surface: deposits are less likely to accumulate, and water retains its taste and odor without unwanted impurities. Rubber sealing rings provide leak resistance at the PN 6 bar working pressure, while a corrosion-resistant reinforcing ring helps maintain joint stability under temperature fluctuations and long-term operation.

A key feature is the conical tightening action, which grips the pipe evenly and compensates for minor dimensional deviations and ovality up to ±0.5 mm. This is especially useful on sites where pipes come from different batches and installation must be completed without extra fitting work. The material is UV-resistant, so the fitting is less prone to sun-related aging and helps reduce the risk of algae and bacteria formation in transparent/light-exposed sections of the system. Color scheme: blue/black, convenient for quick visual identification along the line.

The 25×20 coupling is used in drinking water networks, irrigation and watering systems, high-pressure industrial and domestic sewer lines, as well as fire-fighting pipelines. Installation is straightforward: make a clean square cut, insert the pipe to the stop, and tighten—the compression assembly creates a firm seal without special equipment. The result is a compact reducer with high leak-tightness, resistance to external influences, and smooth internal hydraulics.