The Efaflu Standard NNJ is a robust and highly efficient end suction centrifugal pump engineered according to EN733 (DIN24255) standards. Designed as a free-shaft pump, it offers flexibility for coupling with motors, making it suitable for a wide range of industrial and commercial applications.
Equipped with a closed-type radial impeller made of cast iron, the NNJ pump ensures consistent hydraulic performance and durability under demanding conditions. It is particularly ideal for horizontal installations in HVAC systems, pressurization units, and water distribution networks.
The pump is widely used in heating and cooling systems, cooling towers, and industrial processes, where reliable water circulation is critical. Optional configurations allow customization with stainless steel or bronze components for enhanced corrosion resistance, making it adaptable to various fluid types and environments.
Features:
- Free-shaft centrifugal pump design
- Manufactured according to EN733 DIN24255 standards
- Closed radial impeller for high efficiency
- Suitable for horizontal installation
- Durable cast iron construction
- Flexible motor coupling options
- Customizable materials (bronze or stainless steel)
- Reliable performance in continuous operations
Specifications:
| Category |
Details |
| Pump Type |
End Suction Centrifugal Pump |
| Standard |
EN733 (DIN24255) |
| Installation |
Horizontal |
| Impeller Type |
Closed Radial |
| Pump Body Material |
EN-GJL-250 Cast Iron (AISI 316 optional) |
| Impeller Material |
EN-GJL-250 Cast Iron (Stainless Steel optional) |
| Shaft Material |
AISI 420 |
| Mechanical Seal |
Carbon / Ceramic / NBR or Gasket |
| O-Rings |
EPDM |
| Max Fluid Temperature |
Up to 120°C |
| Max Pressure |
10 bar (16 bar optional) |
| Max Ambient Temp |
40°C |
Applications:
- Heating and cooling systems
- HVAC installations
- Pressurization systems
- Cooling towers
- Hot water recirculation
- Water distribution networks
- Irrigation systems
- Industrial processes
