Things TO KNOW ABOUT FOUNTAIN PUMPS

出典: くみこみックス

2012年7月17日 (火) 08:58の版

When replacing a fountain pump or selecting a new a single, first there are some key terms to keep in thoughts:

"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 offering really tiny water, with gallons per hour around zero. So if you require to pump, say, 200 gph at 72", you will possibly want 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, normally rated at distinct heights

"Pump Curve" : The check out life ionizer 8100 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 acquiring a pump for the initial time or when looking for a replacement pump, it is important 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 elements. One particular element is the size of the pump, as covered above. But you also need to contemplate how wide your tubing will be. Tubing is measured in two techniques: inside diameter (i.d.) and outside diameter (o.d.). Extremely skinny i.d. tubing will significantly lessen water flow. Many clients are shocked when they discover that, immediately after hooking up their 500 gallon per hour pump to 1/two" 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. Making use of a 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 still making use of 1/2" tubing, you will increase 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. Yet another dilemma is running the tubing also far. Lengthy lengths of tubing develop 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 very good concept to use 3/4" tubing instead so as not to cut down too significantly on flow.

How a lot water do I need to have? What size of pump? This question is answered in element by whether or not you want a "trickle" or a roar. When you buy a fountain, you will normally locate a advised flow. For waterfalls, use this as athena water 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're pumping. So if you are developing a 12" wide waterfall that is 3 tyent mmp 9090 feet tall, you need to purchase a pump that will be pumping 1200 gallons per hour at three feet of height. For modest ponds, whenever possible, it is a good idea to recirculate the water when

an hour, far more usually if possible. Therefore, if your pond is 500 gallons, try to buy

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

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