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The last 10 posts

Monday, June 16th 2003, 4:04am

by drpete3

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.

Saturday, June 14th 2003, 2:18pm


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

Saturday, June 14th 2003, 1:21pm

by fwinns5

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.

Thursday, June 12th 2003, 5:37pm

by Rays Sprinklers

<img src=icon_smile.gif border=0 align=middle>

Rays Above and Beyond Automatic Lawn Sprinklers

Thursday, June 5th 2003, 9:02am

by drpete3

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?

Tuesday, June 3rd 2003, 7:07pm


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.

Tuesday, June 3rd 2003, 7:56am

by Rays Sprinklers

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!

Rays Above and Beyond Automatic Lawn Sprinklers

Tuesday, June 3rd 2003, 7:54am

by Rays 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

Rays Above and Beyond Automatic Lawn Sprinklers

Saturday, May 31st 2003, 7:28am

by rbielak

<BLOCKQUOTE id=quote><font size=1 face="Verdana, Arial, Helvetica" id=quote>quote:<hr height=1 noshade id=quote>
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
<hr height=1 noshade id=quote></BLOCKQUOTE id=quote></font id=quote><font face="Verdana, Arial, Helvetica" size=2 id=quote>

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.

Wednesday, May 28th 2003, 11:58am


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