Series NHM
Chemical-resistant, single-stage plastic centrifugal pump with close-coupled design, with magnetic coupling, normal-priming
The NHM achieves efficiency rates of up to 76 % thanks to its optimized hydraulic design, setting new standards for energy efficiency in its class. Manufactured from individually selectable, chemical-resistant high-performance materials, the NHM delivers exceptional performance combined with outstanding durability.
All sizes are available in ATEX-certified versions for use in ATEX Zones 1 and 2. Available with threaded or flanged connections, as well as optional drain and vent ports.
- Hermetically sealed
- Magnetic coupling
- PP
- PVDF
- 80 °C
- 95 °C
- 42 m³/h
- 95 m³/h
- 27 m
- Best-in-class efficiency and outstanding energy performance
- Wear-resistant and maintenance-free design thanks to the unique bearing system with slide-axis technology
- Hermetically sealed, contact-free magnetic drive – eliminating the need for a mechanical seal
Performance Overview
Description- Characteristics
- Performance Curves
- Spare Parts
Chemical-resistant, single-stage plastic centrifugal pump with close-coupled design, with magnetic coupling, normal-priming
Features
- Hermetically sealed and absolutely leak-free (no mechanical seal)
- Contactless magnetic drive with high-performance neodymium magnets
- Highly efficient impeller and optimised volute casing for efficiencies of up to 76 %
- Modular impeller and internal magnet for easy replacement
- Maintenance-free in normal operation due to extra-large slide bearings
- Reliable operation even at high pressures and temperatures thanks to unique backplate geometry
- All wetted parts made of high-quality, corrosion-resistant plastics (natural PVDF or PP-CF and natural PP)
- Equipped as standard with threaded connections in accordance with ISO 228-1 or flange connections
- Universally applicable, low-noise, and compact
- Optional approval for use in potentially explosive atmospheres (ATEX Zones 1 and 2)
- Conductive plastic parts available for ATEX Zone 1 (on request)
- All screws made of V4A stainless steel (1.4571)
- Optional ventilation or drainage holes for individual installation positions
Fields of application
Pumping of acids, bases, lye, or other corrosive, harmful, or toxic liquids in applications where leakage of even small quantities is undesirable and a hermetically sealed pump is required.
Delivery of highly pure and sensitive liquids where contamination must absolutely be avoided.
For example in the following applications:
- Electroplating and surface coating
- Wet chemical processes in semiconductor technology, solar cell production, and PCB manufacturing
- Wastewater and fresh water treatment
- Laboratory equipment and medical technology
- Environmental technology, emission control, gas scrubbers
- Battery production and energy storage
- High-purity applications, demineralised water, ultrapure water
Dimensions
All dimensions are provided for reference purposes only and are subject to change without notice. Dimensional variations may occur depending on motor type, manufacturer, or configuration. A certified dimensional drawing will be supplied with the official quotation or order confirmation.
| GS | GD | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NHM 200 | Thread (inch/mm) |
DN | Thread (inch/mm) |
DN | L (mm) |
B (mm) |
H (mm) |
S (mm) |
a (mm) |
b (mm) |
c (mm) |
D (mm) |
d (mm) |
e (mm) |
f (mm) |
g (mm) |
h (mm) |
i (mm) |
Weight kg) |
| 1.5 kW | G2¼" d50 | 40 | G2¼" d50 | 40 | 496 | 210 | 254 | 10 | 272 | 203 | 125 | 200 | 105 | 15 | 80 | 140 | 230 | 101 | 25 |
| 2.2 kW | G2¼" d50 | 40 | G2¼" d50 | 40 | 496 | 210 | 254 | 10 | 272 | 203 | 125 | 200 | 105 | 24 | 80 | 140 | 230 | 101 | 25 |
| 3.0 kW | G2¼" d50 | 50 | G2¼" d50 | 40 | 532 | 282 | 264 | 12 | 279 | 211 | 140 | 200 | 105 | 14 | 80 | 160 | 230 | 101 | 35 |
Downloads Series NHM
