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MC • Edition 06.2020 • No
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5. List of abbreviations
Abbreviation
Description
AC
Accuracy class
SG
Closing pressure group
K
G
Flow coefficient
Rp
Threaded connection
Class A
Safety pressure relief valve breather line, depending on the pressure relief line.
p
do
Upper response pressure
p
du
Lower response pressure
p
max
Maximum operating pressure
PN
Nominal flange pressure
PS
Maximum permissible pressure
SBV
Safety pressure relief valve
SN
Serial number
SW
Width across flats
W
do
Adjustment range for the upper response pressure by use of the adjusting springs available
W
du
Adjustment range for the lower response pressure by use of the adjusting springs available
W
dso
Specific adjustment range of the adjusting spring installed for the upper response pressure
W
dsu
Specific adjustment range of the adjusting spring installed for the lower response pressure