Correct Pump to feed sprinklers from lake
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Correct Pump to feed sprinklers from lake
I am still trying to get the pressure I need to feed my 5 zone sprinkler system. First I had a 1hp shallow well pump that gave me 75% of the pressure I need. I was told here on the forum that I had the wrong type of pump, so I got a 1 1/2 hp Wayne Sprinkler Pump. With that, I can't get ANY water to the sprinklers. I haven't ruled out a mistake on my part, but how much can you screw up? I had the 1hp pump working.
I asked a local pump installer who sets up sprinkler systems. He says the sprinkler pump I just bought is for moving a large volume of water, not for pressure. He says the 1hp pump should work, and to change the sprinkler heads to accomodate the lower pressure.
So should I try to find a higher hp shallow pump, upgrade to a deep well pump, or keep messing with the sprinkler pump? I appreciate the help I've gotten on this forum.
My set up is 70 feet of 1 1/4" pipe from lake to pump, vertical lift of 5 feet. 3 feet of pipe from pump to sprinkler intake.
thanks
Doug
I asked a local pump installer who sets up sprinkler systems. He says the sprinkler pump I just bought is for moving a large volume of water, not for pressure. He says the 1hp pump should work, and to change the sprinkler heads to accomodate the lower pressure.
So should I try to find a higher hp shallow pump, upgrade to a deep well pump, or keep messing with the sprinkler pump? I appreciate the help I've gotten on this forum.
My set up is 70 feet of 1 1/4" pipe from lake to pump, vertical lift of 5 feet. 3 feet of pipe from pump to sprinkler intake.
thanks
Doug
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Sprinkler pumps are a different type pump than jet pumps. Sprinkler pumps are indeed designed to move alot of water at lower pressures than a jet pump.
The 70' feet of suction line between pump and lake may be a problem for the sprinkler pump, too. A jet pump has a nozzle and venturi tube (the "jet" part) that makes it alot easier for it to draw water from longer distances.
Alot of factors need to be considered when sizing a pump for a particular job.
Distance to water supply, pipe sizing, elevation changes, demand, length of piping to figure friction losses, etc. are all considerations.
Might be time to call in a pro to figure it out.
Ron
The 70' feet of suction line between pump and lake may be a problem for the sprinkler pump, too. A jet pump has a nozzle and venturi tube (the "jet" part) that makes it alot easier for it to draw water from longer distances.
Alot of factors need to be considered when sizing a pump for a particular job.
Distance to water supply, pipe sizing, elevation changes, demand, length of piping to figure friction losses, etc. are all considerations.
Might be time to call in a pro to figure it out.
Ron
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More info on my sprinkler system
The company that installed the sprinkler heads says I needs 10-12 gallons per minute, at 40-50 PSI. Lift from lake to pump is 5 feet with a 70 foot pipe run. Then the pump has to push it up another 5 feet thru a 3/4" copper pipe for about 20 feet. Hope this helps.
thanks for the help
Doug
thanks for the help
Doug
#5
pumps push alot better than they pull. i'm also a little concerned about the 3/4" line supplying enough to your zones. you are probably ok if you're not using high gpm heads.