Compression Coupling Vs Glued Joint

robertc65

It will be real handy to use compression couplings in some spots while tweaking my new sprinkler system. Do compression couplings effect the pressure or flow in any way? I don't plan to bury them, they will remain accessable in the valve boxes.

Thanks

Rob

Teetorbilt

You'll never notice the difference.

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Bill

Thats right, no differe goodnce as long as you tighten the fitting good

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MechanicalDVR

Never seen compression couplings for sprinkler piping, who makes them? What sizes? Do you mean like a pvc dresser coupling?

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KillerToiletSpider

That is what I am guessing, I see them a lot on sprinkler systems.

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robertc65

They are just generic compression PVC couplers. I got them at Lowes. I saw them for 1/2" thru 4" PVC pipe. I'm using standard Sched 40 3/4 PVC for the main runs. I'm just using the couplers to connect the valves while testing and tweaking my zones.

Rob

MechanicalDVR

They are what I was thinking of, haven't seen them used for lawn sprinklers. The only sprinklers I really deal with are fire suppression. Is 3/4" big enough for your mains, I see guys around here use more 1" and 1 1/4" for mains.

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robertc65

Yea I read a good bit about Lawn sprinkler systems before I started to install mine and many suggested using larger than 3/4" pipe. Early on I did some testing of my own just connecting a bunch of pipe together to see how many sprinkler heads I could supply on a single zone. 3/4" allows me to run 4 heads on a single zone dumping about 1/2 of water in about 45 minutes. This seems just fine with me. I'm on a well so I'm not trying to see how fast I can run it dry.

Thanks

Rob