The Conbraco RPDA 4A is a reduced pressure detector assembly ( RPDA ). It is available in 2 ½” – 12” sizes and has been in production since 2008. The 2 1/2″ – 6″ body is made of stainless steel. The 8″ – 12″ body is made of ductile iron with a fused epoxy coating. The RPDA 4AN is an “N” shaped pattern device. A lead free version was introduced in 2011. The RPDA 4A/RPDA 4AN utilizes either a Type I or Type II bypass.
American Backflow Products Company