Parameters of restriction orifice/diffuser
properties characterizing the configuration of a restriction orifice or diffuser according to its specific values
Hierarchy#
Ancestors (top) → ABE562 (highlighted) → subclasses and powertype instances. Capped at 12 each; see the full lists in the sections below.
Higher level classes3#
Declared properties18#
density used to calculate variables to reference conditions
dynamic viscosity used to calculate variables to reference conditions
kinematic viscosity used to calculate variables to reference conditions
absolute pressure used to calculate variables to reference conditions
gauge pressure used to calculate variables to reference conditions
alphanumeric character sequence uniquely identifying a measuring or control point
mass of material flowing per unit time
actual volume of fluid that passes a given point per unit time
highest permanent loss of pressure over the primary element at upper range-limit of flow rate
temperature used to calculate variables to reference conditions
rated flow coefficient, that is expressed by a manufacturer specific designation
number of US gallons of water, within a temperature range of 40°F to 100°F, that will flow through a valve in 1 min when a pressure drop of 1 psi exists
volumetric flow rate of water in cubic metres per hour (capacity) through a valve at a rated travel at the static pressure loss across the valve of 100 kPa (1 bar), within a temperature range of 278 K to 313 K (5°C to 40°C)
pressure ratio at which the cavitation is acoustically detected
pressure differential ratio factor of a control valve installed without reducers or other fittings
liquid pressure recovery factor of the valve without attached fittings
quotient of the specific heat used to calculate variables to reference conditions
state of a medium distinguishable by its physical properties from other states of the same or other media
Subclasses#
No subclasses
This class is a leaf — no other classes inherit from it.
Metadata#
- Version
- 1
- Revision
- 1
- Status
- Standard
- Publisher
- IEC
- Published in
- IEC 61987
- Responsible committee
- SC65E – IEC 61987
- Change request
C00016- Dates
- Original: 2014-07-25
- Current version: 2018-03-20
- Current revision: 2018-03-20
Full source data#
Every key from the original .xls export, including multilingual variants, status, publisher, committee, and workbook-specific codes.
Raw properties (22 keys from source .xls) — click to expand
- C002
- C00016
- C011
- IEC
- C012
- IEC 61987
- C016
- Standard
- C017.de
- 0
- C018.de
- 2014-12-12
- C019.de
- Mr. W. Hartmann
- MDC_P001_5
- 0112/2///61987#ABE562
- MDC_P002_1
- 1
- MDC_P002_2
- 1
- MDC_P003_0
- 2018-03-28
- MDC_P003_1
- 2014-07-25
- MDC_P003_2
- 2018-03-20
- MDC_P003_3
- 2018-03-20
- MDC_P004.de
- Kennwerte der Begrenzungsblende/des Diffusers
- MDC_P004.en
- Parameters of restriction orifice/diffuser
- MDC_P006.de
- Merkmale, die die Eigenschaften einer Begrenzungsblende oder eines Diffusers gemäß deren Kennwerten kennzeichnen
- MDC_P006.en
- properties characterizing the configuration of a restriction orifice or diffuser according to its specific values
- MDC_P010
- 0112/2///61987#ABV501
- MDC_P011
- ITEM_CLASS
- MDC_P012
- SC65E – IEC 61987
- MDC_P014
- {0112/2///61987#ABB271,0112/2///61987#ABD696,0112/2///61987#ABD695,0112/2///61987#ABD666,0112/2///61987#ABE667,0112/2///61987#ABE668,0112/2///61987#ABE669,0112/2///61987#ABB290,0112/2///61987#ABB291,0112/2///61987#ABA324,0112/2///61987#ABA326,0112/2///61987#ABA327,0112/2///61987#ABH430,0112/2///61987#ABA328,0112/2///61987#ABA330,0112/2///61987#ABB781,0112/2///61987#ABH519,0112/2///61987#ABB332}
Version history1#
IEC CDD records every published revision of each entity — version number, status, timestamp, and the change request that introduced it. OpenCDD captures the full chain of custody from cdd.iec.ch; the entry marked Current is the one rendered on this page.