anarboran
Jun 4, 2010, 10:11 AM
I plan to install a 1hp irrigation pump to water my lawn from a lake. The yard is about 15' above the lake and I need to run about 10 sprinkler heads. I think the pump will probably have more capacity than the 10 heads will require but I'm not quite sure. This pump will run on a timer while I am away (this is a part time residence). I will not have a tank or a pressure switch on the pump.
My concern is that if the sprinkler heads get clogged I may damage the pump if it can't get rid of all the water it is pulling in from the lake.
My main question is whether a pressure relief valve will solve this problem? (I've called the pump manufacturer but they weren't helpful.)
The suction hose is 2" and the discharge is 1.5" I would plan to install a "tee" fitting at the discharge, such that the sprinkler water would be delivered out one of the "tee" openings, and on the other opening I would install a pressure relief valve and from it a pipe heading back into the lake.
Would it work to have a pressure relief valve on a "side" discharge pipe instead of the main discharge pipe heading to the sprinkler heads?
And if it would work, what size of pressure relief valve would I need? The pump can deliver 42 gpm, but most of the relief valves I see look like they handle up to 25 gpm. Would that be good enough?
I'm a novice and don't understand plumbing particularly well but I'm trying to learn and would be grateful for any advice!
Thanks in advance.
My concern is that if the sprinkler heads get clogged I may damage the pump if it can't get rid of all the water it is pulling in from the lake.
My main question is whether a pressure relief valve will solve this problem? (I've called the pump manufacturer but they weren't helpful.)
The suction hose is 2" and the discharge is 1.5" I would plan to install a "tee" fitting at the discharge, such that the sprinkler water would be delivered out one of the "tee" openings, and on the other opening I would install a pressure relief valve and from it a pipe heading back into the lake.
Would it work to have a pressure relief valve on a "side" discharge pipe instead of the main discharge pipe heading to the sprinkler heads?
And if it would work, what size of pressure relief valve would I need? The pump can deliver 42 gpm, but most of the relief valves I see look like they handle up to 25 gpm. Would that be good enough?
I'm a novice and don't understand plumbing particularly well but I'm trying to learn and would be grateful for any advice!
Thanks in advance.