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The last 4 posts

Thursday, July 24th 2003, 4:25pm

by Rays Sprinklers

Anti Siphon valve has a backflow prevention device inside, this valve acts as a backflow and a valve. If you decide to use inline youwill have to install another backflow preventor, before the valves. Remember for these to work properly, you must install them 6" above the highest sprinkler head!!

Rays Above and Beyond Automatic Lawn Sprinklers

Thursday, July 24th 2003, 4:20pm

by BrettCB01

Go to the Rainbird site
You will find that Rainbird says "Do not use this anti-siphon valve as a mainline backflow device nor as a master valve."

Tuesday, August 13th 2002, 6:33pm


No. They already have the backflow device in them. Just make sure that you have them installed at least 6 inches above the ground.

Tuesday, August 13th 2002, 4:59pm

by j.m.

Rain Bird ASVF Series

Do i need a standard back flow device if i use the rain bird asvf series control valves with back flow prevention

john machalek