Mr.Cee

ALoha All

. This is how you check what pump size is needed.

On the package of the sprinkler head y ou've purchaced, it should list the release amount of water GPH. You use that number and multiply by the amount of spray sites you have. Then you multiply X2. That will give you the GPH pump that you need..

For example~ sprayhead release 20gph X 20 spray sites= 400 x 2= 800.. 800gph pump is what you need..


~ reference to what i said~ http://thegrowroom.com/pumps.html

malibu

although I plan only up to 7 sprayers at 14 gph ( a pack of 10 was 2 bucks at HD) which is 98 x 2 = 196 I am wondering if the 210 gallom pond pump ($50.) may need to be exchanged for larger anyway--

using CPVC and I also needed a 1/4" to 1/2" galvanized pipe connection --
but also want to know about the drain valve, and if there should also be a way to purge the air out of the dead end space to fill the piping.

also, by not using pvc cement on some connections --
is that to maybe be able to rotate the pvc pipe and or sprayers ( I'm using the 180 degree type)

also planning a huge 3 " PVC short drain piece to a seperate reservoir (no root clogging !)

malibu

here's the diagram moved from wrongway's post :

Attached Thumbnails

 

scrub

Nice to see my diagram is appreciated and getting around. Another idea from Malibu is to replace the galvanized coupler with a brass bushing.

A bushing is a barrel with threads inside and out.