HFm 51B - 0.75 HP single-phase centrifugal electric pump
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. | Tuesday 30 June - Wednesday 1 July |
![]() | Poste Italiane - 2 giorni Italia | This courier delivers within 24/48 hours from the moment we entrust them with the products. | Tuesday 30 June - Wednesday 1 July |

Carrier: Mail Boxes - 2 giorni
Description: This courier delivers within 48 hours from the moment we entrust the products to him.
Estimated delivery:
Tuesday 30 June - Wednesday 1 July

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:
Tuesday 30 June - Wednesday 1 July




The HFm 51B centrifugal electric pump from the HF series by Pedrollo belongs to the medium flow rate category.
It satisfies the needs of those who require high flow rates and are not interested in having large values in terms of head.
The HFm 51B is recommended for surface and sprinkler irrigation, for drawing water from lakes, rivers and wells.
Advantageous as it is reliable and constant even during long watering sessions.
The flow rate ranges from 50 to 300 litres per minute while the head ranges from 5.4 to 18.2 metres.
- 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 - 0.75 HP single-phase centrifugal electric pumpThis 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 - 0.75 HP single-phase centrifugal electric pump Flow rate up to 300 l/min (18 m³/h). Head up to 12 m. 0.55 Kw (0.75 HP) motor. | ![]() NGAm 1B - 0.75 HP single-phase open impeller centrifugal electric pump Flow rate up to 350 l/min (21 m³/h). Head up to 18 m. 0.55 Kw (0.75 HP) motor. | ![]() NGAm 1B-PRO - 0.75 HP single-phase open impeller electric pump Flow rate up to 350 l/min (21 m³/h). Head up to 18 m. 0.55 Kw (0.75 HP) motor. | |
|---|---|---|---|---|
| Price | Price €344.04 -42% €199.54 | Price €290.36 -42% €168.41 | Price €379.42 -42% €220.06 | Price €802.76 -42% €465.60 |
| 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) 0.55 | Power (Kw) 0.55 |
| Power (HP) | Power (HP) 0.75 | Power (HP) 0.75 | Power (HP) 0.75 | Power (HP) 0.75 |
| Absorption at 230V (A) | Absorption at 230V (A) 4.7 | Absorption at 230V (A) 3.8 | Absorption at 230V (A) 3.3 | Absorption at 230V (A) 5.6 |
| Capacitor | Capacitor 20 µF 450 VL | Capacitor 14 µF 450 VL | Capacitor 16 µF 450 VL | Capacitor 16 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 AISI 316L stainless steel |
| Impeller | Impeller Brass | Impeller Brass | Impeller AISI 316 Stainless Steel | Impeller AISI 316L stainless steel |
| 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 AISI 316 stainless steel |
| 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.) 350 | Max. flow rate (l./min.) 350 |
| Min. head (m.) | Min. head (m.) 5.4 | Min. head (m.) 6 | Min. head (m.) 5 | Min. head (m.) 5 |
| Max. head (m.) | Max. head (m.) 18.2 | Max. head (m.) 12 | Max. head (m.) 18 | Max. head (m.) 18 |
| Jobs | Jobs water supply, irrigation, cooling systems, tank transfer | Jobs water supply, irrigation, cooling systems, tank transfer | Jobs water supply, washing systems | Jobs water supply, cooling systems, washing systems, water treatment plants |
| 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) 22.7 | Height (cm) 22.65 |
| Width (cm) | Width (cm) 30.3 | Width (cm) 27 | Width (cm) 29.7 | Width (cm) 29.9 |
| Depth (cm) | Depth (cm) 19 | Depth (cm) 16.6 | Depth (cm) 19 | Depth (cm) 19 |
| Weight (Kg) | Weight (Kg) 12.9 | Weight (Kg) 8.9 | Weight (Kg) 12.4 | Weight (Kg) 12.7 |
| Warranty (years) | Warranty (years) 2 | Warranty (years) 2 | Warranty (years) 2 | Warranty (years) 2 |



