Factors TO KNOW ABOUT FOUNTAIN PUMPS

出典: くみこみックス

2012年8月28日 (火) 19:09の版

When replacing a fountain pump or choosing a new a single, very first there are some important terms to maintain in thoughts:

"Head": This is the maximum vertical lift of the pump. For instance, a 6' head means the pump is rated to pump water up to 6 feet high. Note, nevertheless, that at 6 feet the pump would be delivering really tiny water, with gallons per hour about zero. So if you need to have to pump, say, 200 gph at 72", you will most likely require 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, typically rated at diverse 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 at " lift, 350 gallons per hour at 24" of lift, and so forth. When purchasing a pump for the initial time or when searching for a replacement pump, it is vital that you know how several 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 few aspects. A single aspect is the size of the pump, as covered above. But you also must contemplate how wide your tubing will be. Tubing is measured in two approaches: inside diameter (i.d.) and outside diameter (o.d.). Really skinny i.d. tubing will greatly decrease water sponsors flow. Many consumers are shocked when they uncover that, immediately after hooking up their 500 gallon per hour pump to 1/2" inside diameter tubing, they are only acquiring what they think about a trickle.

We had an engineer do some calculations for us to illustrate the issue. Using a 300 gph pump with 1/two" tubing is going to restrict your flow to 253 gallons per hour. By escalating the pump to 450 gallons per hour, but nevertheless utilizing 1/two" tubing, you will improve volume only slightly, to 264 gallons per hour! The lesson is this: When purchasing a pump, find out what size of tubing is supposed powered by to go with it. Another problem is operating the tubing also far. Lengthy lengths of tubing create 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 great idea to use three/4" tubing as an alternative so as not to cut down too much on flow.

How significantly water do I need to have? What size of pump? This query is answered in component by no matter whether you want a "trickle" or a roar. When you purchase a fountain, you will usually uncover a suggested flow. For waterfalls, use this as a rule of thumb: for every single 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 creating a 12" wide waterfall that is three feet tall, you need to have to buy a pump that will be pumping 1200 gallons per hour at 3 feet of height. For tiny ponds, whenever achievable, it is a great idea to recirculate the water after

an hour, much more usually if possible. Thus, if your pond is 500 gallons, attempt water alkaline machine to get

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

large ponds, this is not necessary and is far too high-priced.