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Verticle Sump Pumps are best used for sump where submersible Pumps may not be applicable to high cost , if it is stainless steel material and submerisble cannot be used for HOT PIT , as the motor need cooling VSP Pump advantage is that the motor is mounted on top , visible for inspection and bearing failures noise can be observed. Unllike Submersible Pump, maintenance team dont take action unless the pump is not running , by the time it is too late. Mechanical seal will be damaged by then, water gets into the motor and complete overhaul , rewinding is needed which proved costly VSP has no mechanical seal installed ,designed with minimum maintenance in mind.

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Semi Open or Fully Open Impeller Pumps for Sollid Handling up to 80 mm and als0 high visocisty fluids can also be used as Mixing application

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Over the years , we usually come across User /Customer telling us give them a pump at X M3/hr at 6 bar or 8 bar, which sometime overestimated or guesswork without actual calculation. This resulted in over rated motor KW or oversized pump , which is wasteful in term of energy and pump size

Even , the working head is only 2.5 bar , customer specifiy much higher thinking it is better or as a safety factor

Not all engineers are fluid dynamics people , therefore it would be best a simple sketch showing piping diameter in the system and let pump suppliers work out the System Head closest to the requirement

user may consider Energy Efficient Drives / Motor , IE 2 or IE 3 , where many countries are phasing out IE 1 , with about 200 pumps in a palm oil refineries ,definitely much saving on energy cost

Operating with Frequency Invertors will also help a lot , that is supply as per demand .Not necessary for the Pumps to operate full load , especially in HVAC application ,There are hours where building is empty and coooling capacity can be reduced

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