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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.

Solid will attend Buildexpo Kenya 2026 in Nairobi from July 8-10, 2026. Visit Booth 137, Hall 4 to explore ductile iron pipe fittings, flange adaptors, couplings, dismantling joints and repair clamps for water pipeline projects.

Solid is pleased to announce that we will participate in THAIWATER EXPO 2026, one of the important exhibitions for water supply, wastewater treatment, pipeline engineering, and related infrastructure industries in Southeast Asia.

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.

One of the most common mistakes is selecting a flange adaptor that does not match the pipe outside diameter. Pipeline projects often involve different pipe materials, and the same nominal diameter may have different outside diameters depending on the pipe standard.

Learn what a flange adaptor is, how it works in water pipeline systems, where it is used, and how to choose the right flange adaptor for reliable pipe connections.