Items TO KNOW ABOUT FOUNTAIN PUMPS

出典: くみこみックス

2012年7月15日 (日) 11:08の版

When replacing a fountain pump or choosing a new one, 1st there are some crucial terms to keep in mind:

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

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

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

"Pump Curve" : The amount of water volume "curved" according to numerous heights. A powered by 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 acquiring a pump for the 1st time or when seeking a replacement pump, it is vital 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 couple of elements. A single factor 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 ways: inside diameter (i.d.) and outside diameter (o.d.). Extremely skinny i.d. tubing will greatly minimize water flow. Numerous customers are shocked when they uncover that, after hooking up their 500 gallon per hour pump to 1/2" inside diameter tubing, they are only obtaining what they think about a trickle.

We had an engineer do some calculations for us to illustrate the dilemma. Employing a alkaline water machine 300 gph pump with 1/two" tubing is going to restrict your flow to 253 gallons per hour. By increasing the pump to 450 gallons per hour, but nonetheless using 1/two" tubing, you will improve volume only slightly, to 264 gallons per hour! The lesson is this: When buying a pump, locate out what size of tubing is supposed to go with it. One more issue is running the tubing too far. Extended lengths of tubing produce cheap chanson water ionizer 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 excellent thought to use three/4" tubing instead so as not to cut down also considerably on flow.

How a lot water do I need? What size of pump? This question is answered in part by regardless of whether you want a "trickle" or a roar. When you purchase a fountain, you will typically find a suggested flow. For waterfalls, use this as a rule of thumb: for each inch of stream width or waterfall "sheet," you will need to deliver 100 gallons per hour at the height you are pumping. So if you are constructing a 12" wide waterfall that is 3 feet tall, you want to purchase a pump that will be pumping 1200 gallons per hour at 3 feet of height. For little ponds, whenever possible, it is a great notion to recirculate the water as soon as

an hour, more often if feasible. Therefore, if your pond is 500 gallons, attempt to buy

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

significant ponds, this is not essential and is far too pricey.