Wilkins 375 1 inch Reduced Pressure Principal Backflow
http://www.amazon.com/dp/B0006B07AG?tag=bungasapi-20
Feature
* ASSE listed 1013, IAPMO listed, CSA certified
* Bronze body construction, plastic insert
* Noryl replaceable seats
* Complete with two full port ball valves for shut-off and four ball valve test cocks
WILKINS Reduced Pressure Principle Backflow Preventer
http://www.amazon.com/dp/B0006B07AG?tag=bungasapi-20