Part number ST053030AF46TS is a 3" Cast Iron Eaton model 53BTX duplex strainer with Flat Face Flange connections. The model 53BTX strainer was designed from top to bottom - to be easy to use and service. The duplex design allows for continuous pipe line use even while servicing a basket. Other feautres also contribute to a no-hassel design, like: easy open eyebolts, easy turn handle, and a dynamic ball sealing system. Choose from a range of basket types and from other additional options like pressure gauges, magnetic seperators, drain valves and more.