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

Damn double checks- I can't believe they are still approved for use for sprinkler systems.


How long is your mainline run? What flow are you designing your zones for?

"Bed of gravel..." that's how I should have done it.

I set my system up with Sch40 PVC Teed off the Sch40 PVC main just after the meter. My master shutoff is in a round box by itself about 12+" below soil level just after the Tee from the mainline.

I placed the DC in a large rectangle box (12x16 I think) with a Y-filter. Basically I have the filter on the left side of the box, the pipe then makes a U-Turn with the DC on the right. It's all setup such that all the test cocks of the DC are easily accessable and the filter has room to be removed, cleaned and replaced.

But since my mainline static pressure was only 70psi, I only used a pressure reducer for the part of my system that feeds drip irrigation. To stuff as much in a single box, but leave everything accessable for maintainence, I set up my valves in the mainifold such that a pair of unions mounted vertically hold the valves (i.e. pipe from manifold goes vertical through union, turns 90 to horizontal vavle, then 90 back down toward the ground through a 2nd union). I was then able to run the pressure reducer feeding the mainifold inside of the upside-down U channel created by the series of valves installed with unions. The unions allow me to stuff 4 valves in a standard 12x16 box (i.e. they are mounted closer than usual, but the unions allow them to be removed for maintainence and repair) an allow me to use the space under the valves for the pressure reducer.
I set my system up with Sch40 PVC Teed off the mainline

I set my system up where I had a Y-filter and DC in one box, and valves and pressure reducer in another.