The Ames 4001SS is a reduced pressure assembly (RPA). It was available in 1/2″-1 1/2″ sizes and was produced from 2000-2003. The body was made of nickel plated copper. The 4001SS was an Ames private label of the Watts 995.
Backflow Preventer Repair ManualPart #: BFCATSign in to view price