The first selection parameter is the nominal diameter, normally expressed as DN. For example, a DN300 dismantling joint is generally intended for a DN300 pipeline, valve, pump, or other flanged component.

A typical Gibault joint consists of a center sleeve, two end rings or glands, rubber sealing rings, bolts and nuts. When the bolts are tightened, the end rings move toward the center sleeve and compress the rubber gaskets against the outside surface of the pipe.

Water and wastewater pipeline systems contain much more than straight sections of pipe. Valves, pumps, flow meters, strainers, hydrants, treatment equipment and other flanged components must all be connected to the pipeline.

Flange adaptors are widely used to connect plain-ended pipes to flanged valves, pumps, meters, hydrants, strainers, and other pipeline equipment. Although the component appears simple, choosing the correct flange adaptor requires more than matching the nominal pipe size printed on a drawing.

Learn how to choose between PN10, PN16 and PN25 flange adaptors for water pipelines. Compare pressure ratings, applications, selection factors and common mistakes.

Learn the key differences between restrained and non-restrained flange adaptors, including pipe restraint, pull-out resistance, installation, applications, and selection tips for water pipeline projects.