Reducing Compression Coupling for PE Pipe

Reducing Compression Coupling for PE Pipe

A reducing coupling makes a straight transition between larger and smaller pipe. The two compression sockets have different diameters, so the selected size pair matters at both ends. It is useful when extending a smaller distribution line from a larger supply pipe without adding a separate reducer and equal coupling.

Choose the connection that fits your pipe

Measure the outside diameter of the polyethylene pipe and match it to the selected option. A pipe measurement is different from a threaded connection size, and a fitting that looks close may still be the wrong fit. The available options are 25 × 20 mm, 32 × 20 mm, 32 × 25 mm, 40 × 20 mm, 40 × 25 mm, 40 × 32 mm, 50 × 20 mm, 50 × 25 mm, 50 × 32 mm, 50 × 40 mm, 63 × 20 mm, 63 × 25 mm, 63 × 32 mm, 63 × 40 mm, 63 × 50 mm, 75 × 40 mm, 75 × 50 mm, 75 × 63 mm, 90 × 63 mm, 90 × 75 mm, 110 × 75 mm, 110 × 90 mm. For combinations with more than one dimension, confirm the size at each connection before purchasing. Plan enough space around the blue compression nuts so the joint can be assembled and inspected.

Prepare a clean, supported joint

Cut pipe squarely and remove loose debris from the cut end. Inspect the pipe surface where it will enter the fitting; a deep scratch or distorted end can interfere with a sound joint. Keep the pipe aligned with the socket and follow the supplied assembly instructions for insertion and tightening. Support nearby pipework so its weight does not pull sideways on the fitting.

Check the line before regular watering

After assembly, introduce water gradually and inspect every connection for seepage. Keep the joint accessible until the check is complete. Choose the fitting for the pipe material, size and operating conditions of your own installation, and confirm the permitted working pressure before connecting a pressurised supply. This fitting provides the stated connection geometry; it does not control watering flow or replace a shut-off valve.