Choosing the Right Commercial Pumps - Selection Guide

Posted on Aug 10, 2020

What are the differences between domestic pumps and commercial pumps?

Pumps are essential for the applications of our daily lives, whether for small-scale or so-called domestic applications or relatively large-scale commercial applications. Among all types of pumps, the pumps for water are the most commonly used in whatever situations.

For the domestic applications, water pumps can be applied in providing hot water by increasing the water pressure or recirculate the hot water for constantly instant hot water offering. In other cases, the pumps can also be used in the commercial circumstances, such as water supply for the business, schools, and ships, agricultural irrigation, drinking water system, water recirculation, and air conditioning system.

The principles of operating these applications that utilize either domestic pumps or commercial pumps can be similar in one another, but there are still some differences between these two categories, depending on their versatility, footprint, and volume of required water.

● Versatility

Both the domestic pumps and commercial pumps pursue the constant and clean water supply in their applications, because the water that is provided by those applications would turn out for people to use. For domestic pumps, the water is directly supplied to the applications that people use. In contrast, the water that people obtain from the commercial pumps is presented by more versatile ways, which makes the difference between these two categories of pumps.

● Footprint

The domestic pumps provide water for a single house, while the water that the commercial pumps provides is way more widely distributed to their versatile applications. This has something to do with the powerfulness of the motors in the water pumps. The higher numbers of horsepower (hp), the more powerful the motor in a water pump is.

In order to obtain the more powerful horsepower from the motor, the size of the commercial pumps may be larger than that of the domestic pumps, which makes the footprint that are accounted for in each type of pumps different.

● Volume of required water

As the above introduction has mentioned, both the domestic and commercial pumps long for constant and clean water to use. However, because the commercial pumps require relatively more water to supply the various applications, in the choices between the constancy and cleanness, they would pay more attention to the constancy considering the volume of the required water they need. In comparison, the domestic pumps would equally emphasize the importance of these two factors at the same time.


What types of commercial pumps are there?

There are a variety of pumps that can be seen on the markets, each one of them is suitable for pumping different kinds of fluids in different degrees of viscosity. For commercial pumps, they mainly require pumps for water. These water pumps can be simply divided into two types, including centrifugal pumps and positive displacement pumps.

● Centrifugal pumps

The centrifugal pumps are the most commonly used pumps as the versatility of them. They are operated by the centrifugal force with the rotating of the motor followed by the impeller inside the pumps.

The motor works when it receives the electricity, and the electrical energy would be converted into kinetic energy through the rotating of other components, which includes the impeller. Once the impeller rotates, the water that passes through it would be given the centrifugal force in order to increase the water pressure and improve the water flow.

Such application of centrifugal pumps can be seen in circulating pumps that recirculate hot water in combination with the water heating system, water pressure booster pumps that increase the water pressure, or submersible pumps that are hermetically submerged into the water, and provide water for agricultural irrigation.

When there are several impellers and the diffusers around the impellers that comprise a centrifugal pump, the centrifugal pump can also be called a multistage pump, which is used for more kinds of applications.

● Positive displacement pumps

The positive displacement pumps move water mechanically with a fixed volume of water. Instead of the impellers in the centrifugal pumps, the positive displacement pumps move water by using pistons, screws, gears, rollers, diaphragms or vanes. Depending on the methods of moving water, the positive displacement pumps can be further differentiated into two types, including reciprocating and rotary.

The reciprocating positive displacement pumps use pistons, plungers, or diaphragms to drive the back-and-forth movement and repeat this movement continuously. In contrast, the rotary positive displacement pumps rotate cogs or gears to transfer water, and the common application is in the gear pumps.


How are commercial pumps installed?

Based on how the commercial pumps are connected with the plumbing and how they work in the process of providing water, they can be divided into the vertical inline pumps (VIL) and the base-mounted pumps.

● Vertical inline pumps (VIL)

Look in the details of a water pump, it is comprised of a pump and a motor. As the name implies, the motor part of the vertical inline pumps is connected with the pipes vertically, and the suction inlet and the discharge outlet in a line with the pipes. The suction inlet and discharge outlet are the channels of the water. Because of the form that they are connected with the pipes, the route of the flowing of water is relatively smooth, which makes the delivering of water faster.

● Base-mounted pumps

The base-mounted pumps are set on the base of the floor, and they are connected with the plumbing by additional pipes that are extended outwards. This means that the channel of water would be obstructed more than the vertical inline pumps.


How to choose the right commercial pumps?

● Stability

A good commercial pump should have the ability to provide water constantly and control the pressure of water within the appropriate range at the same time. In other words, the right commercial pump has to control the frequency of the rotating of motor by detecting the amount of water pressure. It should arrange the water pressure under the pressure setting in order to maintain the stability of the commercial pump.

● Protection mechanism

When there is shortage of water supply, and the commercial pump keeps operating, it may produce too much heat and cause danger. Therefore, a right commercial pump should have the protection mechanism, which shut off automatically when it detects that there is not sufficient water, in order to ensure the safety of the operating of commercial pump.

● Operation system

The right commercial pumps should be able to work with single or parallel unit operation. This means that when one unit can handle the water usage, it will operate individually. When the unit is not able to maintain the required water pressure because of the increasing water usage, then the other unit would be triggered to operate and work with the other one, and each unit is interchangeable with each other depending on the setting.

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