Technical Glossary

Technical Glossary

This section explains technical valve terms used in product pages, catalogs, datasheets and engineering documents. It includes terminology related to pressure rating, nominal diameter, flange standards, valve testing, coating, materials, installation and maintenance.

Glossary pages help users understand important technical concepts before selecting or comparing valves for waterworks, wastewater systems, pump stations, fire protection systems and industrial utility lines.

Glossary Topics

What Is PN in Valves? Pressure Rating Explained

PN stands for nominal pressure and is used to indicate a pressure rating class for valves, flanges and pipeline components. This glossary article explains what PN means, why PN rating matters, and what should be checked before valve selection.