Things TO KNOW ABOUT FOUNTAIN PUMPS

出典: くみこみックス

2012年5月26日 (土) 08:05の版

When replacing a fountain pump or selecting a new 1, very first there are some crucial terms to maintain 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 delivering extremely small water, with gallons per hour about zero. So if you want 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, usually rated at different heights

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

"Pump Curve" : The quantity of water volume "curved" according to a variety of 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 first time or when looking for 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 handful of factors. A single aspect is the size of the pump, as covered above. But you also ought to consider 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 tyent mmp 7070 greatly reduce water flow. Numerous clients are shocked when they locate that, following hooking up their 500 gallon per hour pump to 1/2" inside diameter tubing, they are only getting what they take into account a trickle.

We had an engineer do some calculations for us to illustrate the difficulty. Using a 300 gph pump with 1/2" tubing is going to restrict your flow to kyk water ionizer 253 gallons per hour. By increasing the pump to 450 gallons per hour, but still employing 1/2" tubing, you will increase volume only slightly, to 264 gallons per hour! The lesson is this: When purchasing a pump, uncover out what size of tubing is supposed to go with it. Yet another issue is running the tubing also far. Long 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 very good notion to use 3/four" tubing rather so as not to cut down too a lot on flow.

How much water do I need to have? What size of pump? This question is answered in part by whether you want a "trickle" or a roar. When you buy a fountain, you will typically locate a suggested flow. For waterfalls, use this as a rule of thumb: for every inch of stream width or waterfall "sheet," you will require to deliver 100 gallons per hour at the height you're pumping. So if alkaline water filter 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 small ponds, whenever possible, it is a good concept to recirculate the water once

an hour, far more typically if achievable. Thus, if your pond is 500 gallons, try to get

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

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