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Old 07-12-2010, 11:23 PM
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Classic Lighting Classic Lighting is online now
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Pump and psi confusion

I'm helping my neighbor try to get her system going. We are currently in a "drought" and the water tables have dropped. I'm pulling my hair out over this. I suspect a lack of pressure from the pump or the system is stretched too thin. Pictures included because they are worth 1000 words. Specifics are listed below:

Shallow well with 3/4 hp Sta-Rite that pumps 10 gpm. 2 gal pressure tank on top with 20psi of air. Not sure what the pressure switch is set at but the pump is not cycling.

Zone 1- (6) Pro sprays with VAN's operating at 15 psi. This zone will not pop up, I suspect due to the low pressure.

Zone 2 and 3- (3) I-20's operating at 25 psi, appear to operate correctly.

Zone 4- (6) Pro sprays with VANs operating at 10 psi. Again, this zone will not pop up.

Zone 5- (3) Pro sprays with 25 psi no problems noted.

I have a few questions:
1. Is there any way to increase the pressure from the pump?
2. How does the pressure tank relate to the outlet pressure?
3. Are the spray zones stretchd too thin?
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Last edited by Classic Lighting; 07-12-2010 at 11:25 PM. Reason: Can't figure out how to rotate pics- sorry
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Old 07-12-2010, 11:29 PM
WalkGood WalkGood is offline
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Pics make my neck hurt for some reason.
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Old 07-12-2010, 11:31 PM
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mitchgo mitchgo is offline
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Take out those van's and put a Fixed rain bird nozzle in

Van's throw out almost twice the amount of water to it's counter part
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Old 07-13-2010, 05:54 AM
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AI Inc AI Inc is offline
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an irrigation system cant run on 10-15 psi, 25 is still begging. Turn on a zone and disconnect the wire going to it.See if the pump ever builds enough pressure to actualy shut off. That will also help you find out what the switch is set to.
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Old 07-13-2010, 07:18 AM
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Wet_Boots Wet_Boots is offline
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I think you dump the spray nozzles in favor of Rotators, and hope they work.
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Old 07-13-2010, 07:42 AM
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DanaMac DanaMac is online now
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What are the sprays designed at? Q, T, H, F? 6 Full circles could be trying to put out 24 GPM which might be the issue.
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Old 07-13-2010, 07:49 AM
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Classic Lighting Classic Lighting is online now
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Quote:
Originally Posted by DanaMac View Post
What are the sprays designed at? Q, T, H, F? 6 Full circles could be trying to put out 24 GPM which might be the issue.
All 6 sprays are half circle, I believe they are 8/ 10 VAN.

Is there any way to increase pressure, or am I stuck with whatever the pump puts out?
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Old 07-13-2010, 08:32 AM
Tom Tom Tom Tom is offline
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Quote:
Originally Posted by Classic Lighting View Post
All 6 sprays are half circle, I believe they are 8/ 10 VAN.
Look up the output of 10 van nozzles in the rb catalog
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Old 07-13-2010, 07:57 AM
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Wet_Boots Wet_Boots is offline
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pumps do what they do - you reduce flows in the affected zones, is what you do
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Old 07-13-2010, 10:11 AM
Kiril Kiril is offline
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Quote:
Originally Posted by Wet_Boots View Post
pumps do what they do - you reduce flows in the affected zones, is what you do
I hate to agree with boots
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