Part number ST053010AF46TS is a 1" Cast Iron Eaton model 53BTX duplex strainer with Flat Face Flange connections. Eaton's 53BTX is a compact style duplex strainer with standard full size baskets. That means it fits into tight spaces AND maintains the low presure drop performance of a standard size strainer. The duplex design means no shutdown is required to service baskets. Dual drain plugs allow for a dry service chamber, and other features like an easy turn operating handle contribute to a no-hassel strainer for demanding industrial applications.