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Absolutely. The centrifugal pump shaft and impeller are spinning at extremely fast rates. With no water flow to transfer their rotational energy, that energy is released as heat instead.  So, the pump will get very hot. If the pump is run dry, its moving parts, mainly the mechanical seal or shaft packing will fail and excessive seal leakage will occur.

Both ISO & DIN pumps are heavily used in circulation and transfer applications around the world due to their reliability and in expense while able to achieve high flow rates and high heads.

But what is the difference? 

• ISO- International Standards Organisation
• DIN – Deutsches Institut für Normun

Due to their standards being different, DIN pumps & ISO Pumps wont align in their heights, widths or lengths.
But the most standout point between the two is the inlet and outlet flanges.

We can supply both ISO & DIN pumps for your desired application.

EXD – Flameproof Enclosure – The protection concept is to contain the explosion and prevent the flame propagation. Following the protection is pure mechanical, i.e. strength of housing and the installation and maintenance of functional flamepaths to avoid flame propagation.

EXE – Increased Safety – The protection concept is to avoid all arcs, sparks or hot surfaces. This protection is more sophisticated and explosion integrity is taken care of by manufacturer.

Whether it’s your centrifugal or pressure cleaner pump, here could be several factors behind this.

Firstly, 90% of pumps fail due to poor suction conditions. Some of the other factors are as follows;

Pressure cleaner pumps;

• Lack of water
• Dirty water
• Hose leaks
• Poorly fitted hose clamps
• Blocked filters
• Lack of maintenance

Centrifugal pumps:

• Lack of water
• Incorrect hose size (suction and discharge)
• Exceeding suction design capabilities
• Poorly fitted hose clamps (suction side)

Additionally, if you are using pipes that are too small or have too many elbows, this can also cause issues. Pumping water through small diameter pipes (and pipes with elbows and check valves) increases the water pressure (called friction loss), but as a result also increases flow resistance. If the resistance is too great, your pump will not perform.

When the inlet pressure of a water pump falls below pump design specifications, tiny vapor bubbles can form in the water around the eye of the impeller. 

When the water containing these bubbles is forced into a high pressure environment on the other side of the impeller, these bubbles collapse, thereby creating tiny shock waves and points of high pressure. These shock waves can actually corrode the surface of the impeller. 

To prevent cavitation, always be sure to operate your centrifugal pump within its pressure and flow specifications. 90% of pumps will fail due to issues such as hoses, fittings and clamps not being fitted correctly which results in poor suction.