ISA 75.11 : 1985

Name: ISA 75.11 : 1985
Brand: ISA

Superseded

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INHERENT FLOW CHARACTERISTICS AND RANGEABILITY OF CONTROL VALVES

Available format(s)

Hardcopy

Superseded date

19-11-2002

Language(s)

English

Published date

01-01-1997

Publisher

International Society of Automation

1. Scope
2. Basic definitions
   2.1 Terminology
   2.2 Flow coefficient
   2.3 Inherent flow characteristic
   2.4 Inherent rangeability
   2.5 Relative flow coefficient (0)
   2.6 Relative travel (h)
3. Typical inherent flow characteristics
4. Permissible deviations between actual and manufacturer-
   stated inherent flow characteristics

To establish criteria for adherence to manufacturer-defined flow characteristics and to specify the statement of typical control valve inherent flow characteristics and inherent rangeabilities is the purpose of this standard. Uses the basic definitions from ISA-75.05-1983 and defines specific terms related to flow characteristic and rangeability.

Committee	SP75
DevelopmentNote	Supersedes and redesignates ISA S75.11. (06/2000) Redesignated by ISA 75.11.01. (01/2003)
DocumentType	Standard
Pages	14
PublisherName	International Society of Automation
Status	Superseded
SupersededBy	ISA 75.11.01 : 1985
Supersedes	ISA S75.11 : 85(R1997)