Welcome to Plbg.com
Thank you to all the plumbing professionals who offer their advice and expertise

Over 675,000 strictly plumbing related posts

Welcome to Plbg.com and PlumbingForum.com. The best online (strictly) PLUMBING advice, help, dyi, and informational plumbing forum. Questions and discussions about toilets, sinks, faucets, drainage, venting, water heating, showers, pumps, water quality, and other exclusively PLUMBING related issues. Please refrain from asking where to purchase a product, or business, pricing, or legal questions, or for contractor referrals, or any questions not related to plumbing. Keep all posts positive and absolutely no advertising. Our site is completely free, without ads or pop-ups. We do not sell your information. We are made possible by:  

Post New
Search
Log In
How to Show Images
Newest Subjects
 3/4" Anti-Siphon Valve Keeps Throwing Out Water
Author: eptexas (CA)

As stated above, in Southern California, my anti-siphon valve keeps draining out water. As soon as the sprinkler stops watering, the anti-valve part throws out lots of water. I have 2 other valves in my system that work just fine; no throwing out water. I just bought a new 3/4" Anti-Siphon valve thinking my old one was bad (I replaced 3 times) and the problem is still there. It throws out water like a heart...seems to heave after each throw-out. I can't explain it any better. Or...like the Tsunamis...they come in and then seem to go back out again. Never had this problem before and the location where the 3 installed Anti-Siphon Valves is getting soaked. I don't know what to do. It is manufactured by Orbit. Brand new and it acts like the older ones by Toro and Lawn Genie. Defects?

Post Reply

 Re: 3/4" Anti-Siphon Valve Keeps Throwing Out Water
Author: steve (CA)

Are there any outlets on the valve circuit that are at a higher elevation than the valve?

Post Reply

 Re: 3/4" Anti-Siphon Valve Keeps Throwing Out Water clap
Author: eptexas (CA)

I finally got my answer from the guy who put the sprinklers in...once the sprinkler turns off, all the water remaining in the line comes down the pipes and hits the anti-siphon valve, leaking all that water out. He says it's not a problem but he said the same thing as you, Steve...I need to put the valve higher than 2 feet! Or just leave it like that. Thanks so much for your reply, though. Funny thing...I did not get a notification that you responded to my question. I just got on on a whim and there you were! Thanks again and good night.



Edited 1 times.

Post Reply

 Re: 3/4" Anti-Siphon Valve Keeps Throwing Out Water
Author: steve (CA)

The anti-siphon is suppose to be at least 6" higher than the highest sprinkler head.



Edited 1 times.

Post Reply





Please note:
  • Inappropriate messages or blatant advertising will be deleted. We cannot be held responsible for bad or inadequate advice.
  • Plbg.com has no control over external content that may be linked to from messages posted here. Please follow external links with caution.
  • Plbg.com is strictly for the exchange of plumbing related advice and NOT to ask about pricing/costs, nor where to find a product (try Google), nor how to operate or promote a business, nor for ethics (law) and the like questions.
  • Plbg.com is also not a place to ask radiant heating (try HeatingHelp.com), electrical or even general construction type questions. We are exclusively for plumbing questions.

Search for plumbing parts on our sponsor's site:




Special thanks to our sponsor:
PlumbingSupply.com


Copyright© 2021 Plbg.com. All Rights Reserved.