SPRINKLER TALK FORUM - You Got Questions, We've Got Answers

I suggest going to your local commercial plumbing supply store and ask them. They will tell you what you need and can explain why that particular pump is sufficient. Their seems to be so many different pumps it is best to ask professionals.

I don't know about pumps very well, but most irrigation systems I've seen running on a pump are on Goulds pumps.

I would like to suck water from a pond for my sprinkler system. The pump will be 10 ft from the water and about 3 ft above the water. The furthest heads will be about 100 ft from the pump and 15 ft above the pump. What size and/or brand pump do you recommend? Any input appreciated.

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Thanks
Ray
Rays Above and Beyond Automatic Lawn Sprinklers

Overall I agree with ray and rvli but I think he makes a good point in that if you a covering long distances then the horse shoe design is a good idea from the stand point of pressure loss. But, why couldnt you use the 1.25 poly throuhgout the entire system in that case?

I agree with Ray on this one. It would save you more money having two manifolds rather than spending more for extra wire and pipe.

We also put our valves in a grouped manifold either in the front or back, so there is not much of a length (no more than 20')and the lines run out of there!

Thanks
Ray
Rays Above and Beyond Automatic Lawn Sprinklers

True but around here we have about 85-105 PSI and eventually the lines can pop, or give out.........if there is a master valve than its okay, but i wouldnt use poly for the mainline..........just my way of doing things.....Poly isnt designed for constant water pressure

Thanks
Ray
Rays Above and Beyond Automatic Lawn Sprinklers

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Hey,
Waittttttt!!!!!!!! Poly is not to be used for the mainline (leading to valves) it will pop under constant pressure, there you need to use copper or PVC, and poly to the sprinklers
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Are you saying that EVERYTHING before the valves (not the breaker, but the valves) needs to be copper or PVC? I TOTALLY disagree.

My mainline is a 300' piece of 1.25" 100psi poly buried in a horseshoe around my house. There's a 30 foot piece that runs from my vaccumn breaker to feed the mainline. About every 30 feet (on my poly mainline) is a 1.25 slip x 1.25 slip x 1" FPT that connects to a 1" jar-top valve (slips are double clamped on every connection). From the valves, I run 1" 100PSI poly to the heads.

I'm on a well with a 20 gpm 3/4 hp pump, which runs (average) 50 psi -- a 40 psi cut-on and a 60 psi cut-off switch settings.

I have NO manifolds built. Which means I used much less 1" poly (less pressure loss versus the 1.25" main to valves, less $$ wasted in 1" poly).

95% of the residential systems installed around here (MI) are designed and built this way -- IF the builder is any good.

Why, again, should I run copper or PVC instead of 100PSI 1.25" poly (330 feet worth)? There's no need.

Nope. You still consider the valves after your master valve on the mainline, so it still needs to be PVC or Copper. No Exception!