Universal Coupling Installation Guide

Preparation and alignment

Universal Couplings are supplied ready assembled. It is not necessary to dismantle the product for installation.

1. 01

   Examine both pipe ends

   Ensure the pipe ends are round, smooth and free from bulges, dents, score marks, scale, rust and loose debris. Check that both pipe diameters are within the range provided for the coupling. Weld beads must be ground flush while maintaining the correct surface profile.

2. 02

   Check the gasket and lubrication

   Check that the grade of gasket is suitable for the conveyed medium. Check that the rubber seal is sufficiently lubricated where it contacts the coupling centre barrel. If not, apply a suitable lubricant.

3. 03

   Align, support and mark

   Align the pipe to be laid with the pipe already in position. Keep the pipe ends concentric, adjusting the support or trench bed as necessary. Mark both pipe ends at a distance equal to or greater than half the overall assembled width of the coupling. Place the coupling wholly on one pipe end.

Tightening and setting gap

4. 04

   Centre the coupling

   Adjust the setting gap between pipe ends as necessary. Using the marks made in Step 3, slide the coupling to a central position over the pipe ends and commence bolt-up.

5. 05

   Tighten opposite bolts progressively

   Tighten diametrically opposed bolts, giving the nuts one or two turns at a time to draw up the end rings evenly. Tighten to the specified torque, working around the coupling as many times as necessary. The radial gap between the pipe and coupling should be even all the way round. Rubber may be seen to extrude.

Size reference