<b>Yes, SprinklerWarehouse.com does sell the following types of backflow devices:</b> Pressure Vacuum Breaker {PVB}, Double Check Valve Assembly {DC}, and the Reduced Pressure Principle Assembly {RPZ}.
<b>These types of devices are made by several manufacturers. SprinklerWarehouse.com sells backflow devices from the following manufacturers:</b>
Febco, Watts, Conbraco, and Toro (Toro is not recommended since the plastic degrades rapidly).
<b>Here are the links to see or order the backflow devices:</b>
Febco:
http://www.sprinklerwarehouse.com/shop3/BackflowFebco.html
Watts:
http://www.sprinklerwarehouse.com/shop3/BackflowWatts.html
Conbraco:
http://www.sprinklerwarehouse.com/shop3/BackflowConbraco.html
Toro:
http://www.sprinklerwarehouse.com/shop3/BackflowToro.html
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