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CEI EN 60534-2-3

CEI Classification: 65-35

Valvole di regolazione per processi industriali
Parte 2: Capacità di efflusso
Sezione 3: Procedure di prova
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Publication Date: 1995-10
Date Of Withdrawal (DOW): 1998-06
Language: EN-IT
Pages: 36
Issue Num.:  2659
Commitee: CEI-CT65
La presente Norma è la versione italiana della Norma Europea CENELEC EN 60534-2-3, identica alla Pubblicazione IEC 534-2-3 (1983). Si applica alle valvole di regolazione per processi industriali e fornisce le procedure di prova relative alla capacità di efflusso per determinare le variabili che seguono, utilizzate nelle equazioni riportate nelle Pubblicazioni IEC 534-2 e IEC 534-2-2 (Norma CEI 65-13 fasc. 1741): a) coefficiente di portata; b) coefficiente di recupero della pressione del liquido FL di una valvola senza raccordi; c) coefficiente combinato di recupero della pressione del liquido e del fattore correttivo di installazione FLP; d) fattore correttivo di installazione Fp; e) pressioni differenziali limite XT e XTP. Non sono previste procedure di prova per la determinazione del fattore di pressione limite di vena contratta FF e del fattore correttivo funzione del numero di Reynolds FR: tuttavia sono riportati commenti circa la loro determinazione.

See also

EN 60534-2-3
IEC 534-2-3 (1983)

International Coding Standard (ICS)

29.020
Electrical engineering in general
* Including voltages, general electrical terminology, electrical documentation, electrical tables, safety, fire hazard testing, etc.
* Electrical diagrams and charts, see 01.100.25
* Electrical power stations, see 27.100
* Electromagnetic compatibility, see 33.100
13.220.40
Ignitability and burning behaviour of materials and products

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ICS

International Classification for Standards (ICS) is an international classification system for technical standards.

The ICS is a hierarchical classification organized on three levels.

Level 1 covers the main fields of activity in standardization, e.g. road vehicle engineering, agriculture, metallurgy.

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  43    Road Vehicle Engineering

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  43.040    Road vehicle systems

Some groups are further divided into sub-groups (level 3). The notation of a sub-group consists of the group notation and a two-digit number, separated by a point, e.g.

  43.040.20 Lighting, signaling and warning devices

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