Dungs FRSBV 20010 Series Podręcznik użytkownika - Strona 5
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5. List of abbreviations
Abbreviation
AC
SG
K
G
Rp
Class A
p
do
p
du
p
max
PN
PS
SBV
SN
SW
W
do
W
du
W
dso
W
dsu
5 ... 20
Description
Accuracy class
Closing pressure group
Flow coefficient
Threaded connection
Safety pressure relief valve breather line, depending on the pressure relief line.
Upper response pressure
Lower response pressure
Maximum operating pressure
Nominal flange pressure
Maximum permissible pressure
Safety pressure relief valve
Serial number
Width across flats
Adjustment range for the upper response pressure by use of the adjusting springs available
Adjustment range for the lower response pressure by use of the adjusting springs available
Specific adjustment range of the adjusting spring installed for the upper response pressure
Specific adjustment range of the adjusting spring installed for the lower response pressure