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5. Glossary
Headquarters (SEAT)
Fixed part of the device on which the seal is made.
Retention zone
Area inside the device in which the conveyed fluid can become trapped.
Cable gland
Device used to seal the passage of the actuator shaft or rod to the outside.
Autoclave
Refers to the direction of assembly. In the autoclave direction, the fluid pressure "pushes" the obturator onto its seat. A non-return valve will always be installed in the non-autoclave direction.
Kv
Flow coefficient (or capacity): reference value characterizing the pressure drop across the valve in relation to the flow through it under certain conditions (European units).
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Glossary
Bibliography
Regulations
DI 97/23/EC Directive on the approximation of the laws of the Member States concerning pressure equipment, 05/29/1997.
Standards and norms
AFNOR Robinetterie industrielle – Nomenclature des pièces constitutives des principaux appareils de robinetterie. E29-307, December 1989, standard cancelled in December 2005.
- AFNOR Valves and fittings – Terminology – Part 1: definition of device types. - NF EN 736-1 - février 2018
- AFNOR Valves and fittings – Terminology – Part 2: Definition of valve components – Faucets and valves...
Directory
Organizations (non-exhaustive list)
Association française des fabricants de pompes et agitateurs, de compresseurs et de robinetterie). (PROFLUID).
Center technique des industries mécaniques (CETIM).
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