HFm 51B - Single-phase centrifugal electric pump 0.75 HP
Flow rate up to 300 l/min (18 m³/h). Head up to 18.2 m. 0.55 Kw (0.75 HP) motor.
Delivery Options
| Carrier | Description | Estimated Delivery | |
|---|---|---|---|
![]() | Mail Boxes - 2 giorni | This courier delivers within 48 hours from the moment we entrust the products to him. | Wednesday 12 November - Thursday 13 November |
![]() | Poste Italiane - 2 giorni Italia | This courier delivers within 24/48 hours from the moment we entrust them with the products. | Wednesday 12 November - Thursday 13 November |
![]() | DHL - 2 giorni Italia | This courier delivers within 24/48 hours from the moment we entrust the products to him. | Wednesday 12 November - Thursday 13 November |
![]() | Poste Italiane - 3 giorni punto di ritiro | This courier delivers within 24/72 hours from the moment we entrust them with the products. | Wednesday 12 November |
![]() | Ritiro in negozio | Choose where to collect your order within 24/48 hours. | Wednesday 12 November |

Carrier: Mail Boxes - 2 giorni
Description: This courier delivers within 48 hours from the moment we entrust the products to him.
Estimated delivery:
Wednesday 12 November - Thursday 13 November

Carrier: Poste Italiane - 2 giorni Italia
Description: This courier delivers within 24/48 hours from the moment we entrust them with the products.
Estimated delivery:
Wednesday 12 November - Thursday 13 November

Carrier: DHL - 2 giorni Italia
Description: This courier delivers within 24/48 hours from the moment we entrust the products to him.
Estimated delivery:
Wednesday 12 November - Thursday 13 November

Carrier: Poste Italiane - 3 giorni punto di ritiro
Description: This courier delivers within 24/72 hours from the moment we entrust them with the products.
Estimated delivery:
Wednesday 12 November

Carrier: Ritiro in negozio
Description: Choose where to collect your order within 24/48 hours.
Estimated delivery:
Wednesday 12 November




The PEDROLLO pumps of the HF medium flow rate line are recommended for civil and agricultural environments.
The PEDROLLO HF 51B has a flow rate ranging from 50 to 300 litres per minute with a head of 18.2 to 5.4 metres.
The high achievable yields and the possibility of continuous use make the use of this electric pump advantageous for flow or rain irrigation, for drawing water from lakes, rivers, wells or for the most varied industrial uses characterised by the need to achieve considerable flow rates in a medium-low prevalence ratio.
Installation must be carried out indoors or in any case protected from the elements.
- Motor connection
- SINGLE-PHASE
- Power (HP)
- 0.75
- Absorption at 230V (A)
- 4.7
- Capacitor
- 20 µF 450 VL
- Suction mouth
- 1" 1/2
- Delivery mouth
- 1" 1/2
- Pump body
- Cast iron
- Impeller
- Brass
- Number of impellers
- 1
- Crankshaft
- Stainless steel EN 10088-3 1.4104
- Check valve
- No
- Degree of protection
- IP 44
- Minimum flow rate (l./min.)
- 50
- Max. flow rate (l./min.)
- 300
- Min. head (m.)
- 5.4
- Max. head (m.)
- 18.2
- Jobs
- water supply, irrigation, cooling systems, tank transfer
- Max. liquid temperature (°C)
- +90°C
- Motor voltage
- 230 V
- Height (cm)
- 22.5
- Width (cm)
- 30.3
- Depth (cm)
- 19
- Weight (Kg)
- 12.9
- Warranty (years)
- 2
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Bearings
| Pump side motor bearing | 6203 ZZ |
| Opposite side motor bearing | 6203 ZZ |
Shaft seal
| Type of seal | Single Mechanical Seal |
| Pump side model | AR-14 |
| LP diameter | 14 |
| Fixed ring LP | Ceramic |
| Rotating ring LP | Graphite |
| LP elastomer | NBR |
Mat
| 1.0 - Pump Body | Cast iron GJL 200 EN 1561 |
| 2.1 - Seal holder cover | EN 1.4301 stainless steel (AISI 304) |
| 3.0 - Impeller | Brass CW617N EN 12165 |
| 4.0 - Pump shaft | EN 1.4057 stainless steel (AISI 431) |
| 6.0 - Motor holder | Aluminum EN-AB 46100 |
| 6.1 - Engine cover | Aluminum EN-AB 46100 |
| 7.0 - Lantern | Aluminum EN-AB 46100 |
Compare with Similar Products
![]() HFm 51B - Single-phase centrifugal electric pump 0.75 HPThis product Flow rate up to 300 l/min (18 m³/h). Head up to 18.2 m. 0.55 Kw (0.75 HP) motor. | ![]() HFm 50A - Single-phase centrifugal electric pump 0.75 HPFlow rate up to 300 l/min (18 m³/h). Head up to 12 m. 0.55 Kw (0.75 HP) motor. | ![]() HFm 51A - Single-phase centrifugal electric pump 1 HPFlow rate up to 300 l/min (18 m³/h). Head up to 21.2 m. 0.75 Kw (1 HP) motor. | ![]() HFm 70C - 1.5 HP Single Phase Centrifugal Electric PumpFlow rate up to 300 l/min (18 m³/h). Head up to 29 m. 1.1 Kw (1.5 HP) motor. | |
|---|---|---|---|---|
| Price | Price €326.96 -42% €189.64 | Price €276.94 -42% €160.63 | Price €334.28 -42% €193.88 | Price €542.90 -42% €314.88 |
| Motor connection | Motor connection SINGLE-PHASE | Motor connection SINGLE-PHASE | Motor connection SINGLE-PHASE | Motor connection SINGLE-PHASE |
| Power (Kw) | Power (Kw) -- | Power (Kw) 0.55 | Power (Kw) 0.75 | Power (Kw) 1.1 |
| Power (HP) | Power (HP) 0.75 | Power (HP) 0.75 | Power (HP) 1 | Power (HP) 1.5 |
| Absorption at 230V (A) | Absorption at 230V (A) 4.7 | Absorption at 230V (A) 3.8 | Absorption at 230V (A) 5.6 | Absorption at 230V (A) 8 |
| Capacitor | Capacitor 20 µF 450 VL | Capacitor 14 µF 450 VL | Capacitor 20 µF 450 VL | Capacitor 25 µF 450 VL |
| Suction mouth | Suction mouth 1" 1/2 | Suction mouth 1" 1/2 | Suction mouth 1" 1/2 | Suction mouth 1" 1/2 |
| Delivery mouth | Delivery mouth 1" 1/2 | Delivery mouth 1" 1/2 | Delivery mouth 1" 1/2 | Delivery mouth 1" 1/2 |
| Pump body | Pump body Cast iron | Pump body Cast iron | Pump body Cast iron | Pump body Cast iron |
| Impeller | Impeller Brass | Impeller Brass | Impeller Brass | Impeller Brass |
| Number of impellers | Number of impellers 1 | Number of impellers 1 | Number of impellers 1 | Number of impellers 1 |
| Crankshaft | Crankshaft Stainless steel EN 10088-3 1.4104 | Crankshaft AISI 431 stainless steel | Crankshaft AISI 431 stainless steel | Crankshaft Stainless steel EN 10088-3 1.4104 |
| Check valve | Check valve No | Check valve No | Check valve No | Check valve No |
| Degree of protection | Degree of protection IP 44 | Degree of protection IP 44 | Degree of protection IP 44 | Degree of protection IP 44 |
| Minimum flow rate (l./min.) | Minimum flow rate (l./min.) 50 | Minimum flow rate (l./min.) 50 | Minimum flow rate (l./min.) 50 | Minimum flow rate (l./min.) 50 |
| Max. flow rate (l./min.) | Max. flow rate (l./min.) 300 | Max. flow rate (l./min.) 300 | Max. flow rate (l./min.) 300 | Max. flow rate (l./min.) 300 |
| Min. head (m.) | Min. head (m.) 5.4 | Min. head (m.) 6 | Min. head (m.) 8.4 | Min. head (m.) 15 |
| Max. head (m.) | Max. head (m.) 18.2 | Max. head (m.) 12 | Max. head (m.) 21.2 | Max. head (m.) 29 |
| Jobs | Jobs water supply, irrigation, cooling systems, tank transfer | Jobs water supply, irrigation, cooling systems, tank transfer | Jobs water supply, irrigation, cooling systems, tank transfer | Jobs water supply, irrigation, cooling systems, tank transfer |
| Max. liquid temperature (°C) | Max. liquid temperature (°C) +90°C | Max. liquid temperature (°C) +90°C | Max. liquid temperature (°C) +90°C | Max. liquid temperature (°C) +90°C |
| Motor voltage | Motor voltage 230 V | Motor voltage 230 V | Motor voltage 230 V | Motor voltage 230 V |
| Height (cm) | Height (cm) 22.5 | Height (cm) 20 | Height (cm) 22.5 | Height (cm) 26.9 |
| Width (cm) | Width (cm) 30.3 | Width (cm) 27 | Width (cm) 30.3 | Width (cm) 37.3 |
| Depth (cm) | Depth (cm) 19 | Depth (cm) 16.6 | Depth (cm) 19 | Depth (cm) 21.6 |
| Weight (Kg) | Weight (Kg) 12.9 | Weight (Kg) 8.9 | Weight (Kg) 13 | Weight (Kg) 1.8 |
| Warranty (years) | Warranty (years) 2 | Warranty (years) 2 | Warranty (years) 2 | Warranty (years) 2 |






