Magnetic drive pumps, like any other centrifugal equipment, are quite versatile products. But due to their special design, they can be used in areas of production in which other varieties cannot fully cope. The key advantage of the product is the absence of leaks of the pumped liquid. This condition is essential for the chemical industry.
Distinctive features of the equipment
A pump with a magnetic drive is worth buying for pumping aggressive media - alkalis, acids, salt solutions. Due to their high reliability, devices in Ukraine are used to interact with liquids that are potentially hazardous to the environment and human health. A chemical pump with a magnetic drive can be made of polypropylene, PVDF and other plastics, which directly affects its price. If very strict requirements are imposed, then the devices consist of a metal case with an inner coating in the form of a special polymer material.
Magnetic drive centrifugal pumps are not equipped with ball bearings. The sliding effect is achieved by combining a low friction shaft and impeller sleeve. Long-term operation without liquid in the housing without overheating is achieved by combining a graphite bushing with a ceramic shaft. Dry operation makes it possible to abandon strict control of the moment when the liquid substance is completely exhausted in the original container in order to immediately stop the unit.
How to choose a device
For maximum efficiency, a pump with a magnetic drive is selected in accordance with the specifications provided by the customer. The following nuances are taken into account:
- Characteristics of the pumped liquid - temperature, viscosity, density.
- Operating conditions - place of installation, operating mode, climatic version.
- Performance requirements - pressure, head, flow.
- Installation method - horizontal or vertical, surface or semi-submersible.
- The need for additional elements - control station, sensors, start-up protection unit, etc.
For a pump with a magnetic coupling, the price depends on the specified parameters and their indicators. The use and maintenance of devices is simpler and more affordable in comparison with centrifugal units with a packed or stuffing box packing.
Sealed magnetic drive pumps are chosen because there are no rotating elements in their design that require additional sealing. They can be used for pumping any chemical substances with low or medium temperature of the working medium, as well as containing suspended solids.
