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The last 10 posts

Thursday, December 29th 2011, 10:09am

by wsommariva

Good to know. Mine is 48, thanks

Thursday, December 29th 2011, 9:58am

by ReddHead

Static 51.

Wednesday, December 28th 2011, 2:08pm

by wsommariva

What is your psi? I have extra 3/4" PE I'd like to use up if I can

Wednesday, December 28th 2011, 1:07pm

by ReddHead

My biggest zone is about 8GPM and I have all 1 inch piping, backflow, and valves until the zones tee off into two 3/4" PE.

Monday, December 19th 2011, 1:00pm

by wsommariva

Now I know why I thought PE was so costly - last year I bougt 160 psi! 100 psi is less than half of the 160.

Monday, December 19th 2011, 10:57am

by wsommariva

OK 1" all around then

Sunday, December 18th 2011, 12:35pm

by Wet_Boots

perhaps the biggest reason for pros immediately going to one-inch from a 3/4-inch copper pipe in the basement, is that everything is then a one-inch size, be it valve or fitting - in any event, the zone valves should be one-inch, because there are no smaller ones as standard equipment, and their flow controls can be adjusted to match low flow rates

Sunday, December 18th 2011, 7:43am

by wsommariva

Great. Thank you. I'll order the parts - and wait until April to install.

I have 30 feet of 3/4" PE from last year. Can I use it on my zone closest to the valve box? Maybe 40 feet

I ordered Hunter swing joints - seems better than funny pipe?

Saturday, December 17th 2011, 11:41pm

by Mitchgo

1" is a professional industry norm

The main purpose for upsizing a pipe is for reduced friction loss and reduced risk of water hammer if designed properly.

Saturday, December 17th 2011, 6:53pm

by hi.todd

1" is always better.
distance from the meter to the farthest head. The balance is between how many gallons moving through what diameter pipe, and how long the pipe is. There is friction loss through the pipe and the greater distance and gallons will increase the friction loss. If you only have 48 PSI you should assume you need 40 PSI for the MP rotator. You only have 8 PSI to lose.

Good Luck.
Dan :thumbup: