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Technical Articles

Engineering articles on industrial valve and expansion joint selection, applications, installation and maintenance.

Three things stress a fitting on board: saltwater, continuous vibration and limited maintenance access. Selection follows all thre...

How many pieces a ball valve body has is not a manufacturing detail — it decides whether servicing it stops the line.

Sealing in a flanged joint is decided less by the gasket than by how evenly bolt load is spread around it. Sequence and staging ma...

Air has to leave a tank as it fills and enter as it empties. Block that path and the tank either swells or collapses inward — at s...

In a rubber expansion joint the decision that sets service life is the body compound, and it depends not only on the fluid but on...

A Class is not a pressure value. The permissible pressure is read from the standard's table together with material and temperature...

The value of a quick-closing valve is not that it shuts fast but that nobody has to enter the hazardous space to shut it. The loca...

On small bore, a flange is often needless cost — and occasionally the only right answer. The deciding factor is not size but how o...

JIS flanges have their own dimension tables and will not bolt to other families even when outside diameters look similar. On ships...

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