 Design Wilo-CronoNorm-NLG Baseplate pump with axial suction Application - Pumping clean or slightly contaminated water (max. 20 ppm) without solid matter for circulation, transfer and pressure boosting purposes
- For pumping cold and hot water (in accordance with VDI 2035) without abrasive substances in heating, cold water and cooling water systems
- Applications in municipal water supply, irrigation, building services, general industry, power stations, etc.
Type key | Example | NLG 200/315-75/4 | | NLG | Series designation: Standard pump | | 200 | Nominal diameter DN of pressure port | | 315 | Nominal diameter of the impeller [mm] | | 75 | Rated motor power P2 [kW] | | 4 | Number of poles |
Special features/product advantages - Motors with IE2 technology for higher efficiency fitted as standard
- Reduced life cycle costs due to optimised efficiency
- Bidirectional mechanical seal with forced flushing
- Interchangeable wear ring
- Low NPSH values, best cavitation properties
- world-wide high availability of IEC standard motors
EBARA GRUNDFOS KSB WILO | Scope of delivery- Pump with free shaft end or
- Pump on baseplate with coupling and coupling protection or
- Completely mounted pump on baseplate with electric motor
- Installation and operating instructions
Materials - Pump housing and pressure lid: EN-GJS-500-7
- Bearing bracket: EN-GJL-250
- Impeller: EN-GJL-250
(special version: G-CuSn10) - Shaft: 1.4028
- Stationary wear rings: G-CuSn10
- Mechanical seal: AQ1EGG;
(other mechanical seals on request)
Description/design - Single-stage horizontal spiral housing pump with bearing bracket and exchangeable stationary wear rings in process design
- Shaft seal using mechanical shaft seals in accordance with EN 12756 or packing stuffing box
- Spiral housing with cast pump bases. Bearing of the pump shaft using greased grooved ball bearing
- Shaft coupling with intermediate sleeve
General notes – ErP (ecological design-) directive - The benchmark for most efficient water pumps is MEI ≥ 0.70
- The efficiency of a pump with a trimmed impeller is usually lower than that of a pump with the full impeller diameter. The trimming of the impeller will adapt the pump to a fixed duty point, leading to reduced energy consumption. The minimum efficiency index (MEI) is based on the full impeller diameter.
- The operation of this water pump with variable duty points may be more efficient and economic when controlled, for example, by the use of a variable speed drive that matches the pump duty to the system.
- Information on benchmark efficiency is available at www.europump.org/efficiencycharts
|
