4SR 1/50 S-HYD - 30 Liter Submersible Pump
HYDRAULIC PART. WITHOUT MOTOR.
Flow rate up to 30 l/min (1.8 m³/h). Head up to 350 metres.




The Pedrollo 4SR 1/50 S-HYD pump consists of only the impeller part, without the motor.
The 4SR 1/50 S-HYD can be mounted on any 3 HP engine.
The Pedrollo 4SR 1/50 S-HYD pump body is the original spare part for the pump body part of the 4SR 1/50 S with 4PD or 4PS engine.
The 4PD engine is developed with the oil bath technique and can be installed up to 200 meters underwater while the 4PS engine is developed with the water bath technique and can be installed up to 300 meters underwater.
The advantage of Pedrollo 4SR submersible pumps is the possibility of disassembling the pump in 2: pump body and motor. This allows you to replace the part that can be damaged without replacing the entire pump.
The 4SR 1/50 S-HYD pump body is made mainly of AISI 304 stainless steel which provides greater resistance, robustness and above all allows it to last over time.
The pump body is approximately 128 centimetres long.
- Power (HP)
- 3
- Delivery mouth
- 1 "1/4
- Pump body
- AISI 304 stainless steel
- Impeller
- Delrin
- Number of impellers
- 50
- Pump shaft
- AISI 304 stainless steel
- Min. flow rate (l./min.)
- 5
- Max. flow rate (l./min.)
- 30
- Min. head (m.)
- 155
- Max. head (m.)
- 350
- Height (cm)
- 128.4
- Warranty (years)
- 2
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Power (HP) | Power (HP) 3 | Power (HP) 1 | Power (HP) 1.5 | Power (HP) 2 |
Delivery mouth | Delivery mouth 1 "1/4 | Delivery mouth 1 "1/4 | Delivery mouth 1 "1/4 | Delivery mouth 1 "1/4 |
Pump body | Pump body AISI 304 stainless steel | Pump body AISI 304 stainless steel | Pump body AISI 304 stainless steel | Pump body AISI 304 stainless steel |
Impeller | Impeller Delrin | Impeller Delrin | Impeller Delrin | Impeller Delrin |
Number of impellers | Number of impellers 50 | Number of impellers 20 | Number of impellers 29 | Number of impellers 39 |
Pump shaft | Pump shaft AISI 304 stainless steel | Pump shaft AISI 304 stainless steel | Pump shaft AISI 304 stainless steel | Pump shaft AISI 304 stainless steel |
Min. flow rate (l./min.) | Min. flow rate (l./min.) 5 | Min. flow rate (l./min.) 5 | Min. flow rate (l./min.) 5 | Min. flow rate (l./min.) 5 |
Max. flow rate (l./min.) | Max. flow rate (l./min.) 30 | Max. flow rate (l./min.) 30 | Max. flow rate (l./min.) 30 | Max. flow rate (l./min.) 30 |
Min. head (m.) | Min. head (m.) 155 | Min. head (m.) 65 | Min. head (m.) 94 | Min. head (m.) 127 |
Max. head (m.) | Max. head (m.) 350 | Max. head (m.) 139 | Max. head (m.) 201 | Max. head (m.) 271 |
Height (cm) | Height (cm) 128.4 | Height (cm) 58.8 | Height (cm) 76.7 | Height (cm) 99.2 |
Warranty (years) | Warranty (years) 2 | Warranty (years) 2 | Warranty (years) 2 | Warranty (years) 2 |