Dungs FRM 100025 HD, Instruction Manual, Page: 117 / 174

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Edition 10.15 • No
. 270 442
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6.7 Type plate
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Abbrevia -
tion
Description
AG
o
Response pressure group of the upper response pressure
AG
u
Response pressure group of the lower response pressure
AC Accuracy class
C
V
Flow volume coefficient for natural gas
DN Nominal diameter
Fail-open The firing valve moves automatically to the open position, if the main diaphragm or the
auxiliary power required for the actuation of the firing valve fails
IS SSD type: standard strength range
Class A Functional class: in case the comparison membrane is damaged or in the event of a breakdown of the aux -
iliary power supply the SSD closes
p
d
Outlet pressure
p
u
Inlet pressure
PN Nominal pressure of the flange
PS Maximum admissible pressure
SSD Safety shutoff valve
SG Lock-up pressure class
-20T60 Operating temperature -20 °C ... +60 °C
SN Serial number
W
ds
Specific guide range
W
do
Adjustment range for the upper response pressure through regulation of the
available adjusting springs
W
du
Adjustment range for the lower response pressure through regulation of the
available adjusting springs
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
Regulator SSD
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