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Design and principle of operation
Insulation
Regulators can be insulated to reduce heat
energy transfer.
Refer to the instructions in the 'Installation'
chapter.
Note
The Types 45-1, 45-2, 45-3 and 45-4 Regu-
lators are not safety valves. If necessary, a
suitable overpressure protection must be in-
stalled on site in the plant section.
3.1.1
Versions
The regulators are designed for installation
in a district heating station with indirect con-
nection.
− Type 45-1 · With fixed differential pres-
sure · For the installation in the flow pipe
− Type 45-2 · With adjustable differential
pressure · For the installation in the flow
pipe
− Type 45-3 · With fixed differential pres-
sure · For the installation in the return
flow pipe
− Type 45-4 · With adjustable differential
pressure · For the installation in the re-
turn flow pipe
3-4
3.2 Technical data
The regulator nameplate provides informa-
tion on the regulator version (see the 'Mark-
ings on the device' chapter).
Note
More information is available in Data Sheet
u T 3124.
Conformity
The Types 45-1, 45-2, 45-3 and 45-4 Regu-
lators bear both the CE and EAC marks of
conformity.
Process medium and scope of application
The differential pressure regulators are de-
signed to maintain the differential pressure
between the high-pressure and low-pressure
lines to a defined set point.
− For liquids and gases
5 to 130 °C
· 5 to 150 °C
1)
− Differential pressure set points
0.1 to 0.5 bar
3)
− Nominal size DN 15 to 50
− Pressure rating PN 16 and 25
PN 16 only
1)
PN 25 only; only with elastomer made of FKM when
2)
used with liquids
Type 45-1 and Type 45-3 only
3)
Type 45-2 and Type 45-4 only
4)
2)
· 0.1 to 4 bar
4)
EB 3124 EN
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