The Wilkins 375/375A is a reduced pressure assembly ( RPA ). It is available in 2 ½” – 10” sizes and has been in production since 1998. The “A” series began in 2004 and indicates that the inlet and outlet of device body are grooved instead of flanged. Parts are interchangeable between the 375 and 375A series except on 2 ½” – 3” sizes where the repair parts are different. The body is made of ductile iron with a fused epoxy coating. A lead free version was introduced in 2011 (375AXL).
American Backflow Products Company