Items TO KNOW ABOUT FOUNTAIN PUMPS

出典: くみこみックス

2012年8月5日 (日) 11:00の版

When replacing a fountain pump or picking a new one, initial there are some essential terms to keep in thoughts:

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

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

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

"Pump Curve" : The amount of water volume "curved" according to numerous heights. A 500 gallon per hour pump, for instance, may well pump 500 gallons per hour at " lift, 350 gallons per hour at 24" of lift, and so forth. When buying a pump for the initial time or when seeking a replacement pump, it is essential that you know how many 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 variables. A single element is the size of the pump, as covered above. But you also need to contemplate how wide your tubing will be. water ionizer Tubing is measured in two approaches: inside diameter (i.d.) and outside diameter (o.d.). Extremely skinny i.d. tubing will greatly decrease water flow. Many buyers are shocked when they locate that, following hooking up their 500 gallon per hour pump to 1/two" inside diameter tubing, they are only finding what they consider a trickle.

We had an engineer do some calculations for us to illustrate the issue. Using a 300 gph pump with 1/2" tubing is going to restrict your flow to 253 gallons per hour. By rising the pump to 450 gallons per hour, but nevertheless making use of 1/2" tubing, you will improve volume only slightly, to 264 gallons per hour! The lesson is this: When buying a generation two chat pump, locate out what size of tubing is supposed to go with it. One more issue is running the tubing as well far. Extended 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 excellent idea to use 3/4" tubing as an alternative so as not to cut down too considerably on flow.

How considerably water do I need to have? What size of pump? This query is answered in element by regardless of whether you want a "trickle" or a roar. When you purchase a fountain, you will usually discover a suggested flow. For waterfalls, use this as a rule of thumb: for each and 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 you are creating a 12" look into max filter wide waterfall that is three feet tall, you require to purchase a pump that will be pumping 1200 gallons per hour at 3 feet of height. For modest ponds, anytime feasible, it is a very good thought to recirculate the water as soon as

an hour, far more usually if feasible. 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 genuinely

significant ponds, this is not required and is far as well high-priced.