Get current pricing for Polymetal, 500 Gal 316-SS React 500 Gallon, 316l-ss Reactor Mfg By Polymetal, 1973. Dished Top And Bottom. 4', Dia X 5', 5 Straight Side. 316l-ss Shell Rated 100 Psi/fv . Product Category: Process Equipment, Sub Category: Process Reactors: