calculation and selection
Data sheet
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Model
40012
Manufacturer
Herz
Country
Austria
Allowable working fluids
Water
Function
maintains a set water flow rate at the installation place
Action
closes when the flow rate increases
Working position
normally open
Installation of electric actuator
impossible
PN
16
Tmax (for water)
100 °C
Tmin (for water)
-20 °C
Connection type
external thread
Body material
brass
technical
specifications
price
| DN mm |
L mm |
Kvs m³/h |
dG m³/h |
dP bar |
price |
|---|---|---|---|---|---|
| 15 | 66 | - | 0.040 - 0.40 |
0.020 - 2.00 |
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| 20 | 76 | - | 0.080 - 0.90 |
0.020 - 2.00 |
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| 25 | 76 | - | 0.10 - 1.50 |
0.030 - 2.00 |
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| 32 | 114 | - | 0.20 - 2.50 |
0.020 - 2.00 |
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| 40 | 132 | - | 0.40 - 4.00 |
0.030 - 2.00 |
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| 50 | 140 | - | 0.50 - 5.00 |
0.040 - 2.00 |
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DN - nominal diameter, mm.
L - length along the pipeline axis, mm.
dG - flow setting range, m³/h.
dP - pressure loss range on the controller, bar.
Kvs - flow capacity, corresponds to water flow rate in m³/h at which the pressure drop on the controller will be 1 bar.
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