I know you loose gph with head hight but what about distance. Is it measured the same? X.......................Y If your pump is x and it has to push water say 6ft to get to why are you getting the same gph as if it were only 1 ft? Im assuming not but I didn't know how to figure it out. I wasnt sure if it was the same as if the pump was pushing the water 6ft high or 6 ft long.
pump question
- Thread starter n2extreme1
- Start date
6 feet high and long are totally different.
The distance does effect gph, but only when talking lenghts of 20'+. If you are only going 6', there should be little to no loss in gph. Some factors like pump size do come into play. A Rio 200 and 2100 are two different animals. GPH could be strained on a sizeable distance for a little pump.
The distance does effect gph, but only when talking lenghts of 20'+. If you are only going 6', there should be little to no loss in gph. Some factors like pump size do come into play. A Rio 200 and 2100 are two different animals. GPH could be strained on a sizeable distance for a little pump.
Its not near as significant as head loss but friction loss is a factor, especially on high flow low head pond pumps. It is dependent on flow rate and fittings too. The faster the flow and more fittings/curves the greater the loss. Here is a chart of the losses:
http://www.plumbingsupply.com/flowchart.html
What do you have in mind?
It can be very significant. In my case I have about 50' of pipe and another 60' equivalent of fittings for my return. Running 2" pipe would have gave me about 15' of vertical head pressure (which my pumps are not even rated for) and 3" dropped the figure to 2' of head loss.
http://www.plumbingsupply.com/flowchart.html
What do you have in mind?
It can be very significant. In my case I have about 50' of pipe and another 60' equivalent of fittings for my return. Running 2" pipe would have gave me about 15' of vertical head pressure (which my pumps are not even rated for) and 3" dropped the figure to 2' of head loss.