Calling All Sprinkler Guys!

dkillianjr

Hey guys, Heres what I got, I was installing some downspout drains the other week and hit a sprinkler pipe. No problem just repaired it with some couplings and sdr21 and flushed the system real good. Well I was just there and 2 of the sprinlers in the same zone are trickling water out of the heads even when the sprinkler panel is shut off. There are 5 rotors on this zone, but it is on a hill and these two are at the bottom and closest to the house.

What do you guys think would cause this?

I juat want to make sure it wasn't something I did. I took the rotors apart and cleaned them out, but still no difference. I was thinking maybe a electric valve is stuck or something. I guess I should add, this is the zone I hit and repaired.

The system is a Toro and all of the rotors are super 700.


Thanks, Dave

ChainsawCharlie

Does it stop eventually? Water in the lines will drain out of the lowest sprinklers on the line.

Or maybe you have a valve not closing all the way.

swade

If you got into the main line then you may have debris in the valve. If not it sounds like you have low head drainage.

You can swap out the bottom rotors with ones that have a built in check vavle.

Install a check valve at each head

Install one immediately after the valve in line with the lateral.

Only issue with installing them on the last two heads is that the water might back up to the 3rd and leak there.

Rainbird models with check valves are called S.A.M's (seal a matic...Just FYI)

If it were me, I would go to the last head, cut the pvc just before the head fitting, flush out the line, install new fitting and whatever components were used to pipe to the head and see how that works. If it still leaks see above.

dkillianjr

Thanks for the info guys, I'm gonna stop tomorrow and take a better look at it and probly flush it out real good. Wish me luck



Dave

28sean

Check the diaphram in the solenoid valve on the troubled zone.I have had this happen a million times.You break a line, repair it and trash(or in my cases a small pebble)will keep the diaphram from sealing correctly(aka leaking heads) in the valve.Take the valve apart and clean it.Pay close attention to the spring assembly and be sure you reassemble in the same order. hope this helps

dkillianjr

Thanks, Sean

Thats acctually exactly what happened. The hardest part was finding the control box, luckily the homeowner who is 96 years old remembered almost exactly where they burried it Popped the cap off and there was a little pebble, flushed it out and all fixed.




Dave