Things TO KNOW ABOUT FOUNTAIN PUMPS

出典: くみこみックス

2012年9月6日 (木) 00:36の版

When replacing a fountain pump or selecting a new 1, initial there are some key terms to preserve in mind:



"Head": This is the maximum vertical lift of the pump. For example, a 6' head implies the pump is rated to pump water up to 6 feet high. Note, nonetheless, that at 6 feet the pump would be offering extremely tiny water, with gallons per hour around zero. So if you require to pump, say, 200 gph at 72", you tumbshots will most likely need to have about a 300-600 gallon per hour pump to do the job.



"GPH" : Gallons per hour, normally rated at various heights



"GPM" : Gallons per minute, usually rated at various heights



"Pump Curve" : The quantity of water volume "curved" according to several heights. A 500 gallon per hour pump, for instance, may pump 500 gallons per hour at " lift, 350 gallons per hour at 24" of lift, and so forth. When purchasing a pump for the initial time or when seeking a replacement pump, it is essential that you know how numerous 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 couple of elements. 1 aspect is the size of the pump, as covered above. But you also must think about how wide your tubing will be. Tubing is measured in two methods: inside diameter (i.d.) and outside diameter (o.d.). Very skinny i.d. tubing will significantly reduce water flow. A lot of consumers are shocked when they locate that, right after hooking up their 500 gallon per hour pump to 1/two" inside diameter tubing, they are only obtaining what they consider a trickle.



We had an engineer do some calculations for us to illustrate the dilemma. Using a 300 gph pump with 1/2" tubing is going to restrict your flow to 253 gallons per hour. By growing the pump to 450 gallons per hour, but nonetheless using 1/two" tubing, you will enhance volume only slightly, to 264 gallons per hour! The lesson is this: When purchasing a pump, find out what size of tubing is supposed to go with it. Yet another difficulty is operating the tubing too far. Long lengths of tubing generate resistance. If your pump calls for 1/2" i.d. tubing, for instance, but you are running the tubing twenty feet from the pump, it is



a good thought to use three/4" tubing instead so as not to reduce down as well significantly on flow.



How considerably water do I want? What size of pump? This query is answered in element by regardless of whether you want a "trickle" or a roar. When you buy a fountain, you will normally find a suggested flow. For waterfalls, use this as a rule of thumb: for every single inch of stream width or waterfall "sheet," you will need to have to deliver 100 gallons learn about water ionizer per hour at the height you happen to be pumping. So if you are building a 12" wide waterfall that is 3 feet tall, you require to get a pump that water ionizer will be pumping 1200 gallons per hour at 3 feet of height. For little ponds, anytime achievable, it is a excellent concept to recirculate the water as soon as



an hour, much more typically if attainable. As a result, if your pond is 500 gallons, attempt to buy



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



large ponds, this is not necessary and is far too costly.