For use in heating, air conditioning, and industrial systems
- Automatic speed control (proportional pressure, constant volume) or fixed speed steps (constant pressure) adjustable via rotary knob
- Integrated night setback
- Bleed screw
- Manual start-up aid
- 1 m pre-assembled connection cable
- No external motor protection required
- Without thermal insulation shell
- Delivery without screwed connection
Technical data:
- Operating voltage: 230 V, 50 Hz
- Protection class: IP42
- Temperature range: +2°C...+110°C
- Max. operating pressure: 10 bar
- Pump housing material: KTL-coated grey cast iron, corrosion-resistant
Available variants
Technical details by variant
25-4.0 — Ref. 90 028 84
- Energy Efficiency Index (EEI): 0.17
- Power [W]: 4 - 20
- Installation length [mm]: 180
- Protection class (IP): IP42
- Pressure class: PN 10
- Nominal diameter: DN 25 (1")
- Housing material: Cast iron
- Max. fluid temperature (continuous operation) [°C]: 110
- Type: 25-4.0
- External thread: DN 40 (1 1/2")
- Connection: External thread
25-6.0 — Ref. 90 028 85
- Energy Efficiency Index (EEI): 0.18
- Power [W]: 5 - 37
- Installation length [mm]: 180
- Protection class (IP): IP42
- Pressure class: PN 10
- Nominal diameter: DN 25 (1")
- Housing material: Cast iron
- Max. fluid temperature (continuous operation) [°C]: 110
- Type: 25-6.0
- External thread: DN 40 (1 1/2")
- Connection: External thread
25-8.0 — Ref. 90 028 86
- Energy Efficiency Index (EEI): 0.2
- Power [W]: 6 - 64
- Installation length [mm]: 180
- Protection class (IP): IP42
- Pressure class: PN 10
- Nominal diameter: DN 25 (1")
- Housing material: Cast iron
- Max. fluid temperature (continuous operation) [°C]: 110
- Type: 25-8.0
- External thread: DN 40 (1 1/2")
- Connection: External thread
30-4.0 — Ref. 90 028 87
- Energy Efficiency Index (EEI): 0.17
- Power [W]: 4 - 20
- Installation length [mm]: 180
- Protection class (IP): IP42
- Pressure class: PN 10
- Nominal diameter: DN 32 (1 1/4")
- Housing material: Cast iron
- Max. fluid temperature (continuous operation) [°C]: 110
- Type: 30-4.0
- External thread: DN 50 (2")
- Connection: External thread
30-6.0 — Ref. 90 028 88
- Energy Efficiency Index (EEI): 0.18
- Power [W]: 5 - 37
- Installation length [mm]: 180
- Protection class (IP): IP42
- Pressure class: PN 10
- Nominal dimension: DN 32 (1 1/4")
- Housing material: Cast iron
- Max. fluid temperature (continuous operation) [°C]: 110
- Type: 30-6.0
- Male thread: DN 50 (2")
- Connection: Male thread
30-8.0 — Ref. 90 028 89
- Energy Efficiency Index (EEI): 0.2
- Power [W]: 6 - 64
- Installation length [mm]: 180
- Protection class (IP): IP42
- Pressure class: PN 10
- Nominal diameter: DN 32 (1 1/4")
- Housing material: Cast iron
- Max. fluid temperature (continuous operation) [°C]: 110
- Type: 30-8.0
- External thread: DN 50 (2")
- Connection: External thread
Data sheets
