7
Notes for the Reader
Abbreviations and Terms
NOTE
Further useful information.
Abbreviations and Terms
Abbreviation
Explanation
a/f
Indicates the size of spanners
width across flats
approx.
approximately
BS
British Standard
bar
Unit of measurement of pressure [bar]
All pressure ratings [bar/psi] stand for over pressure [bar
g
/psi
g
]
if this is not explicitly described differently.
Cv value
flow coefficient [US gallons per minute]
1 Cv = 1,17 x Kv
°C
Unit of measurement of temperature [degree Celsius]
dm
3
n
Unit of measurement of volume [cubic decimetre]
Volume (litre) at standard temperature and pressure
DN
DIN nominal width
DIN
German standard issued by DIN (Deutsches Institut für Normung e.V,
German Institute for Standardization)
EN
European Standard
EPDM
Material designation
Short designation according to DIN/ISO 1629:
Ethylene Propylene Diene Rubber
°F
Unit of measurement of temperature [degree Fahrenheit]
FKM
Material designation, short designation according to DIN/ISO 1629:
Fluorine rubber
h
Unit of measurement of time [hour}
HNBR
Material designation
Short designation according to DIN/ISO 1629:
Hydrogenated Acrylonitrile Butadiene Rubber
IP
Protection class
Inch Unit
of
measurement of length [inch]
Inch OD
Pipe dimension acc. to British standard
(BS), Outside Diameter
Inch IPS
US pipe dimension
Iron Pipe Size
ISO
International standard issued by the International Organization for Standardi-
zation
kg
Unit of measurement of weight [kilogram]
Содержание ECOVENT N/W
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