2 1/2", 3"
The Rainbird backflow assemblies were manufactured by the Watts Regulator Co. between 1983-1992. The Rainbird Company bought the rights to put their name on various models of Watts backflow assemblies and sells them as Rainbird backflow assemblies. For specific information see the corresponding Watts model 009.
Common repair parts are a very small subset of the 10,000 plus items BAVCO stocks.
Please feel free to contact us direct at 800-458-3492 for pricing on items not listed
or backflow prevention devices.