ST30R030AT40A - Eaton Model 30R Simplex Basket StrainerFor a dependable cost effective simplex strainer, look no further than the Eaton 30R. Remove debris and particulate from the process media and protect meters, pumps and nozzles. Part ST30R030AT40A is a 3" size 30R strainer made of cast iron and using NPT threaded connections. Choose your basket mesh (20 to 400) or perforation (1 32" to 1 2"). Optional Monel basket, 1 2" threaded taps, vent valves and more.