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The pump draws water from the bottom of the tower; there is no level gauge. What can be installed to prevent the pump from sucking in air or running dry, thereby protecting it?

2016-06-30View Original

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The pump draws water from the bottom of the tower; there is no level gauge. What can be installed to prevent the pump from sucking in air or running dry, thereby protecting it? For example, can a pressure gauge for low-pressure protection be installed on the suction pipe?
Reply #22016-06-30
Make a water-sealing tank; when stopping the pump, close the outlet first and then the inlet. If the inlet pipeline is relatively long, a valve can be installed at a distance from the pump
Reply #32016-06-30
For electrical systems, installing an overload protector will solve the problem
Reply #42016-06-30
The key is to determine when the pump is about to reach vacuum, which needs to be achieved through instrument-based automatic control
Reply #52016-06-30
The key is to determine when the pump is about to reach vacuum – whether it has already reached vacuum under no-load conditions, or if there is already a delay ?
Reply #62016-06-30
It’s impossible to determine the level without a level gauge for pumping; pressure gauges are not useful as they don’t have such high precision. Stopping the pump immediately after finishing use will not damage it
Reply #72016-06-30
It is also possible to install a pressure gauge on the pump inlet pipeline to interlock the pump, but the tower pressure should remain relatively constant. Rather than making such modifications, it is more accurate to install a level switch or level gauge at the bottom of the tower.
Reply #82016-06-30
After experiencing several instances of pump damage caused by power interruptions, we have installed low-current protection (automatic shutdown of the pump at low current levels) on all our magnetic pumps.
Reply #92016-07-01
It’s better to install a liquid level gauge; it facilitates the operation of the tower, ensures stable operation, prevents operation without liquid, and provides protection against empty-load conditions

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