Items TO KNOW ABOUT FOUNTAIN PUMPS: Unterschied zwischen den Versionen

Version vom 25. Mai 2012, 10:25 Uhr

When replacing a fountain pump or selecting a new a single, very first there are some important terms to preserve in mind:

"Head": This is the maximum vertical lift of the pump. For example, a 6' head means the pump is rated to pump water up to 6 feet high. Note, however, that at 6 feet the pump would be offering really small water, with gallons per hour about zero. So if you require to pump, say, 200 gph at 72", you will almost certainly require about a 300-600 gallon per hour pump to do the job.

"GPH" : Gallons per hour, generally rated at different heights

"GPM" : Gallons per minute, normally rated at different heights

"Pump Curve" : The copyright quantity of water volume "curved" according to numerous heights. A 500 gallon per hour pump, for instance, may possibly pump 500 gallons per hour at " lift, 350 gallons per hour at 24" of lift, and so forth. When purchasing a pump for the first time or when looking go there for a replacement pump, it is essential that you know how a lot of gallons per hour you want to pump and at what height (head).

Water Volume The total volume that you will be pumping is controlled by a handful of factors. One element is the size of the pump, as covered above. But you also must consider how wide your tubing will be. Tubing is measured in two approaches: inside diameter (i.d.) and outside diameter (o.d.). Extremely skinny i.d. tubing will greatly reduce water flow. Numerous customers are shocked when they find that, after hooking up their 500 gallon per hour pump to 1/two" inside diameter tubing, they are only obtaining what they contemplate a trickle.

We had an engineer do some calculations for us to illustrate the issue. Employing a 300 gph pump with 1/two" tubing is going to restrict your source flow to 253 gallons per hour. By rising the pump to 450 gallons per hour, but nevertheless using 1/two" tubing, you will boost volume only slightly, to 264 gallons per hour! The lesson is this: When buying a pump, find out what size of tubing is supposed to go with it. Yet another problem is running the tubing also far. Extended lengths of tubing produce resistance. If your pump calls for 1/two" i.d. tubing, for instance, but you are running the tubing twenty feet from the pump, it is

a great concept to use three/4" tubing instead so as not to cut down also considerably on flow.

How significantly water do I require? What size of pump? This question is answered in element by whether you want a "trickle" or a roar. When you get a fountain, you will generally discover a recommended flow. For waterfalls, use this as a rule of thumb: for each inch of stream width or waterfall "sheet," you will need to have to deliver 100 gallons per hour at the height you're pumping. So if you are constructing a 12" wide waterfall that is three feet tall, you require to purchase a pump that will be pumping 1200 gallons per hour at 3 feet of height. For small ponds, whenever attainable, it is a good notion to recirculate the water once

an hour, a lot more typically if attainable. Therefore, if your pond is 500 gallons, try to acquire

a pump that will recirculate water at a rate of 500 gallons per hour. For really

huge ponds, this is not required and is far too pricey.