Eaton's model 53 BTX strainer is a duplex vessel with a unique diverter cartridge designed for excellent sealing with no bypass. Each feature speaks the hassle-free design of this strainer - from the easy-turn handle, to the unique seat design that requires no adjustments. This particular model has a designated construction material, size and connection type. Part number ST053007BT22A is a 3/4" Stainless Steel Eaton model 53BTX duplex strainer with NPT connections. Other sizes are available: 3/4" to 4", as well as materials: carbon steel, cast iron, bronze.