You are not logged in.


Dear visitor, welcome to SPRINKLER TALK FORUM - You Got Questions, We've Got Answers. If this is your first visit here, please read the Help. It explains how this page works. You must be registered before you can use all the page's features. Please use the registration form, to register here or read more information about the registration process. If you are already registered, please login here.

Attention: The last reply to this post was 3676 days ago. The thread may already be out of date. Please consider creating a new thread.

Message information
Automatically converts internet addresses into links by adding [url] and [/url] around them.
Smiley code in your message such as :) is automatically displayed as image.
You can use BBCode to format your message, if this option is enabled.
Security measure

Please enter the letters that are shown in the picture below (without spaces, and upper or lower case can be used).

The last 7 posts

Friday, May 30th 2008, 1:02am

by mrfixit

One more thought.

If you have a pressure regulator on your sprinkler system it might be broken. There's a spring inside that corrodes and breaks in half which lowers the flow of water that can go through it.

Good luck!

Thursday, May 29th 2008, 2:14pm

by mrfixit

Low pressure.

Hi, those guys are right. It sounds like a valve isn't open all the way. Here's something I ran across once on an 1 1/2" system. Both ball valves on either side of the backflow were broken. The handle appeared to be on but the balls inside were only open part way giving the system low pressure. That was a very unusual case but a place to look if all else fails. I couldn't tell there was anything wrong with the ball valves until I took them off.

Good luck!

Thursday, May 29th 2008, 7:33am

by drpete

I agree with dan. Check your meter.

Wednesday, May 28th 2008, 10:30pm

by hi.todd

Even with out the plumbing situation. Still check the meter turn it off and then turn it on. I have had several customers not aware that somebody shut down the water and then turned it back on. Even if you don't notice a pressure difference at your inside gallons per minute with greater volume (Sprinklers there can be a big difference).

The AVB is not supposed to be under constant pressure. Is it? I am not the AVB Police!!

You have to do the meter.

That is all I have GOT!!


Wednesday, May 28th 2008, 3:58pm

by beerman

No new plumbing has been done in the house and the pressure is the same it it has always been in other parts of the house. The backflow is an atmospheric. How would I check to see if it is open all the way?

Tuesday, May 27th 2008, 10:53pm

by hi.todd

Has there been any plumbing done at your house recently. Check to make sure your meter is open all the way. The only way to to this is to close it and then open it again with the hose bib at the house open so you can gauge the pressure or eyeball it. It should be obvious. Also check to see if the Backflow is open all the way. If you are not sure , you are not sure. Check these issues. I will bet you that it is one of these.

Good Luck


Tuesday, May 27th 2008, 7:01pm

by beerman

Low pressure

I have about a 20 year old rainbird system with six zones, city water fed and 3-4 heads per zone. Every year I have it blown out for winter. This year I am not getting much pressure (heads won't cycle and flow is weak) on any of the zones. Some heads won't even squirt. I replaced the insides of the flowback valve this year because it was leaking last year, but that is the only thing that has changed (and the replacement parts look exactly like the old ones and are same manufacturer (febco). The system always worked great before this. No new construction in the area. Control valves are very close to the house and nothing has changed around the valves or lines there. I am at my wits end. Any suggestions????