Backflow Devices

There are 5 types of backflow prevention assemblies (Air Gap, AVB, PVB, DC, and RP; but, these are not all equally acceptable as protection against all types of hazards. Look here for help in choosing the correct device to protect your drinking water.

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Threads

	Replies	Views	Last post
Backflow prevention by nogreenthumb (May 1st 2006, 10:23am)	8	1,682	by HooKooDooKu (Jan 9th 2007, 5:44am)
PVB Replacement by menace4258 (May 19th 2015, 6:52pm)	1	1,674	by Wet_Boots (May 20th 2015, 12:49am)
Vibrating PVB by bdnannac (Jul 17th 2012, 12:58pm)	6	1,673	by bdnannac (Jul 18th 2012, 4:37pm)
internals diagram of Watts 800M4 PVB? by OlieNH (Jun 3rd 2011, 1:49pm)	1	1,651	by worachj (Jun 3rd 2011, 2:06pm)
Best way to install PVB by wsommariva (May 15th 2011, 7:53am)	6	1,602	by wsommariva (May 18th 2011, 1:58pm)
check valve on sprinkler head downstream of ASV? by segask (Sep 22nd 2003, 7:22pm)	7	1,602	by Rays Sprinklers (Sep 29th 2003, 12:37pm)
Febco or Watts by DOORZ (Apr 29th 2006, 1:46am)	6	1,594	by xpedient (Jun 25th 2006, 7:30pm)
1" Watts 800M4FR by ReddHead (Nov 11th 2012, 6:19pm)	3	1,569	by Wet_Boots (Nov 13th 2012, 12:48pm)
Need a reccomendation by JohnnyG101 (Oct 10th 2006, 5:30am)	13	1,567	by HooKooDooKu (Oct 18th 2006, 4:18pm)
Little confused on backflow by bcsteeve (Jun 9th 2014, 10:23pm)	12	1,564	by bcsteeve (Aug 2nd 2014, 4:07pm)