An introduction to pumps

Let's talk about pumps
How many pumps do you own? It's actually a very interesting question. If you asked a contractor or rental store operator they might respond with a number anywhere between 1 and 50. On the other hand a layperson might reply that he has no need for pumps in his/her home or workplace. So, getting back to our original question, how many pumps do you own?
Even if you think you don't own any, the chances are very good that you own a few pumps and simply forgot to consider them. Pumps are among the most widely manufactured items in the world and their many designs permit their use in a variety of applications. They are used in everything from washing machines, refrigerators, cars and trucks to construction sites, wastewater treatment facilities and food processing plants.
Pumps make possible many every day tasks that we often take for granted. Indeed without pumps our world would be a much different place than we know it today.
Construction Pumps
As noted previously, there are many types of pump available in today's market. Yet there is not one pump ideally suited for every application. Construction is a competitive business with deadlines and budgets that contractors have to meet in order to be successful. A heavy storm can set back a job for several days or even weeks. Prolonged downtime can cost contractors substantial amounts of money since bonuses are often paid for finishing jobs under budget and ahead of schedule. The 4 key points of interest in contractor grade water pumps are:
  • Performance
  • Low downtime
  • Durability
  • Value for money
Construction Water Pump Designs
While many pumps can be found on construction sites, there are two very general types of water pumps. Different in design and application they each basically serve the same purpose, which is to move water from point A to point B.
The first type of pump is the centrifugal design. This type uses a rotating impeller to draw water into the pump and pressurize the discharge flow. Common rental pumps include standard, trash and submersible models.
The second type of pump is the positive displacement design, the most common of which is the diaphragm type. These pumps deliver a fixed amount of flow per cycle through the mechanical contraction and expansion of a flexible diaphragm.
Click here to read about the basics in pump theory
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