Part number ST053030BF11TS is a 3" Bronze Eaton model 53BTX duplex strainer with Flat Face Flange connections. Designed for ease of use, the 53BTX strainer is unique in that it is compact in design with a low profile that is able to fit into some spaces standard strainers cannot. Despite this compact design, it still utilizes full size strainer baskets for a low pressure drop. Choose your basket type - there is one for every application, from stainless steel to Hastelloy C in various sizes. A unique diverter system directs flow from one side to another, while drain valves make sure the service chamber is dry for basket cleaning or replacement.