Your advantages
- Reduced life-cycle costs through optimized efficiency levels
- Bidirectional, force-flushed mechanical seal
- Low NPSH values, best cavitation properties
- Shaft coupling with or without spacer coupling
Construction
Single-stage, low-pressure centrifugal pump with axial suction, mounted on a baseplate.
Application
- Pumping of heating water (acc. to VDI 2035), cold water and water/glycol mixtures without abrasive substances in heating, cold water, and cooling systems.
- Applications for irrigation, building services, general industry, power stations, etc.
Equipment/function
Single-stage low-pressure centrifugal pump in monobloc design with coupling, coupling guard, motor, and baseplate
- Mechanical shaft seal or stuffing box
Type key
| Example | NL 40/200B-11/2 |
| NL | Standard pump with axial suction |
| 40 | DN for the pressure flange |
| 200 | Impeller nominal diameter [mm] |
| B | Hydraulic version |
| 11 | Rated power P2 [kW] |
| 2 | Number of poles |
Technical data
- Permissible temperature range of -20°C to +120°C
- Mains connection 3~400 V, 50 Hz
- Protection class IP 55
- Nominal diameter DN 32 to DN 150
- Max. operating pressure 16 bar
Materials
- Pump housing and pressure lid: EN-GJL-250
- Bearing bracket: EN-GJL-250
- impeller: EN-GJL-250 (special version: G-CuSn10)
- Shaft: X20Cr13
- Mechanical seal: AQ1EGG (other mechanical seals on request)
Description
- Single-level, low-pressure centrifugal pump as baseplate pump with axial suction ports with flanged bearing bracket and axle fastening for flexibly coupled drives
- Spacer coupling (sleeve coupling) is available optionally, they provide the option to leave the motor in position when dismantling the rotor unit