Submersible pumps selection made easy for you
Submersible pumps ... you will hear terms like maximum head, maximum flow and pressure drop when people talk of submersible pumps selection for ponds and water features. We help you out here. These specific maximum head and volume terms have caused many problems to people buying submersible pumps. They are not useful when deciding upon the exact pump you need.Submersible pumps In any pond, fountain or water feature it is generally necessary to install submersible pumps to achieve the following ...
Submersible pumps ... selection introduction The points briefly discussed here are considered in far greater detail by following the pond submersible pumps links on this page. Here then is a brief summary of what you need to look for and learn a bit about ... your dealer may not know much more than you so beware Submersible pumps of the type we will discuss are used extensively in all types of water features. They are referred to as centrifugal submersible pumps ... quite simply this means they are pumps that spin around and use centrifugal force to deliver water to your waterfall or fountain head or straight back into the pond via a filter. They are low in cost to manufacture and hard to damage because even if the outlet from the pump becomes blocked no damage occurs. In this way flow control is made easy by restricting the outlet pipe using a valve or even by clamping the pipe partly shut. Submersible pumps in ponds lie at the bottom of the pond, completely submersed ... hence their name Because they are submersed the height a pump needs to pump against is measured from the water surface and not from the bottom of the pond. This height is normally referred to as "head" in submersible pumps jargon. Think of submersible pumps as being able to provide a fixed amount of energy to circulating water. Think of this constant energy as being shared out in 2 ways .... submersible pumps energy in part is used to pump volume and the other part is used to lift that volume. You cannot expect the same pump to deliver as much water if you expect it to also pump to a higher point. Here's a simple analogy .. you would need the same energy if you carried one bucket of water up a flight of stairs 20 feet high as you would if you carried 2 buckets of water up a flight of stairs 10 feet high. Submersible pumps are just like this ... if you want to pump more higher then get a bigger pump. One size cannot fit all situations for the simple reason the energy from the pump motor is constant in most cases. You will now understand that to specify and buy submersible pumps that will do a good job it is necessary to know how much water is to be pumped and how high that volume of water must be pumped. Without both bits of information you cannot specify submersible pumps. Now if you want to really explore this further follow the submersible pond pumps links on this page. |
