Features/Product Advantages
IE3/IE4 motor technology ensures energy-efficient operation
Optimized efficiency reduces life-cycle costs
Bi-directional, forced-flush mechanical seal
Replaceable casing wear rings
Permanently lubricated, generously sized ball bearings
Low NPSH values and excellent cavitation characteristics
Environmental Attributes
Improved hydraulics and the use of IE3/IE4 motors enhance overall efficiency and save energy
Easily replaceable standardized components extend product service life (e.g., easily removable spacer couplings, bronze casing wear rings)
Construction
Single-stage, low-pressure centrifugal pump with axial suction, baseplate-mounted.
Applications
Pumping of hot water (compliant with VDI 2035), cold water, and water/glycol mixtures—free of abrasive materials—in heating, chilled water, and cooling systems. Applications: Irrigation, building services, general industry, power plants, etc.
Equipment/Functions
Single-stage, low-pressure centrifugal pump featuring a modular design; includes coupling, coupling guard, motor, and baseplate.
Mechanical seal or gland packing
Model code
|
Example |
NLG 200/315-75/4 |
|
NLG |
Series Name: Standard Pump |
|
200 |
Nominal diameter (DN) of pressure nozzle |
|
315 |
Nominal impeller diameter [mm] |
|
75 |
Rated motor power P2 [kW] |
|
4 |
Number of poles |
Technical data
Permissible temperature range: -20 °C to +120 °C
Power supply: 3~400 V, 50 Hz
Protection class: IP55
Nominal diameter: DN 150 to DN 300
Max. operating pressure: 16 bar
Materials
Pump housing and discharge cover: EN-GJS-500-7
Bearing bracket: EN-GJL-250
Impeller: EN-GJL-250 (Special version: G-CuSn10)
Shaft: 1.4028
Casing wear ring: G-CuSn10
Mechanical seal: AQ1EGG (other mechanical seals available upon request)
Type
Single-stage horizontal volute casing pump with bearing bracket and replaceable casing wear ring; back pull-out design
Shaft sealing via mechanical seal (compliant with EN 12756) or gland packing
Volute casing with cast-on pump feet; shaft supported by lubricated deep-groove ball bearings
Coupling with spacer sleeve
Scope of delivery
Pump
Installation and operating instructions
Pump with bare shaft end, or
Baseplate-mounted pump with coupling and coupling guard, or
Complete baseplate-mounted pump unit with motor
Options
Other materials and models available upon request
Other voltages and frequencies available upon request.
