Things TO KNOW ABOUT FOUNTAIN PUMPS
出典: くみこみックス
When countertop scale reducing system replacing a fountain pump or deciding on a new a single, very first there are some important terms to keep 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, nevertheless, that at 6 feet the pump would be supplying extremely little water, with gallons per hour about zero. So if you require to pump, say, 200 gph at 72", you will probably require about a 300-600 gallon per hour pump to do the job.
"GPH" : Gallons per hour, usually rated at various heights
"GPM" : Gallons per minute, usually rated at distinct heights
"Pump Curve" : The amount of water volume "curved" according to different heights. A 500 gallon per hour pump, for instance, might pump 500 gallons per hour miracle max at " lift, 350 gallons per hour at 24" of lift, and so forth. When purchasing a pump for the 1st time or when seeking 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 aspects. One particular aspect is the size of the pump, as covered above. But you also should take into account how wide your tubing will be. Tubing is measured in two methods: inside diameter (i.d.) and outside diameter (o.d.). Really skinny i.d. tubing will significantly lessen water flow. Numerous clients are shocked when they discover that, after hooking up their 500 gallon per hour pump to 1/2" inside diameter tubing, they are only getting what they contemplate a trickle.
We had an engineer do some calculations for us to illustrate the dilemma. Employing a 300 gph pump with 1/two" tubing is going to restrict your flow to 253 gallons per hour. By rising the pump to 450 gallons per hour, but still making use of 1/2" tubing, you will increase volume only slightly, to 264 gallons per hour! The lesson is this: When getting a pump, discover out what size of tubing is supposed to go with it. Another problem is running the tubing too far. Extended lengths of tubing produce resistance. If your pump calls for 1/2" i.d. tubing, for instance, but you are operating the tubing twenty feet from the pump, it is
a good thought to use three/four" tubing rather so as not to cut down also significantly on flow.
How much water do I need? What size of pump? This question is answered in element by whether or not you want a "trickle" or a roar. When you get a fountain, you will normally discover a suggested flow. For waterfalls, use this as a rule of thumb: for each inch of stream width or waterfall "sheet," you will want to deliver 100 gallons per hour at the height you are pumping. So if you are building a 12" wide waterfall that is 3 feet tall, you need to have to acquire a pump that will be pumping 1200 gallons per hour at three feet of height. For little ponds, whenever possible, it is a good concept to recirculate the water when
an hour, more often if purchase scale reduction system feasible. 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 genuinely
significant ponds, this is not needed and is far also pricey.