Water pumps help increase the volume of flow of water from different water sources to the water outlets. But, what is the difference between high-pressure pumps and high-flow water pumps? In a layman’s language, it is easy to understand these plumbing applications. When you look at the field of water pumps, you may have two options; a pump that moves a moderate volume of water at high pressure and a pump that carries a high volume of water but operates at a lower pressure.

High-pressure pump

High pressure helps push water up at a higher distance. This ability allows them to overcome the resistance to the flow of water or your whole plumbing system so that fluid can flow through it at a specific flow range and pressure range. Installing a high-pressure pump is to deal with low water pressure, which is usually very frustrating. Low water pressure means you have to wait longer to fill a cup with tap water or spend more time in the shower because the water volume is low. A high-pressure pump requires a proper drainage system as it can easily cause flooding. Suitable electrical insulation is also necessary before cleaning to ensure that the dirt splashed by the water does not damage electrical systems.

A high flow water pump

On the other hand, high-flow water pumps deliver high volumes of water at a lower pressure. For instance, when operating a waterfall, you don’t need a lot of water shooting like 25feet into the air but a relatively high volume of water moving over a short distance. The reason to use a high flow rate water pump is to avoid cavitation. Cavitation occurs when the water pressure and velocity become so high that the flow gets turbulent inside the pump and pipes. That results in the formation and collapse of water bubbles that can easily damage the insides of the water pump’s wet end. Therefore, a high-flow water pump operates at lower speeds since high pressure is not required to move the water hence less energy.

Generally,  high pressure and high flow water pumps from pumpbiz are both necessary to the water system, especially with heating and cooling problems. A high-flow water pump increases the volume of water which helps the coolant to move faster. A high-pressure water pump raises the water’s boiling point to decrease the probability of vapor forming in the coolant.

Pointers to consider when choosing a water pump

  • The intended use of the water pump.
  • The size of the pipes in which the water will be pumped.
  • Will the water source be above or below the pump?
  • The volume of water you need to move, how many outlets the pump needs to supply water to at a go.
  • The range of pressure you need.
  • Determine the extent to which the pressure pump needs to work. For instance, is it a several-storey unit with several bathrooms?

Keep in mind that the further the water needs to travel, the stronger the pump should be. Note that water weighs a lot, and more pressure is erected on the pump.


Depending on your application, you may require a high-pressure or high-flow water pump. However, combining the two features may result in a suitable medium where adequate flow and pressure are achieved.