All casting components traceable to mill test certificatesInvestment cast on all materials for sizes 12-10 (ANSIASME Class 150 lbs)Investment cast on all materials for sizes 12-6 (ANSIASME Class 300 lbs)Investment cast on all materials for sizes DN 15 DN 150 (PN 16 PN 40) CORROSION PROTECTION FluoroSeal standard base model offers Carbon Steel body, plug and cover (ASTM A216 Gr. WCB, 1.0619). Even though FluoroSeal Inc. offers the low porosity PFA (Perfluoroalkoxy) as standard, all cast parts have an epoxy-based coating prior to lining for added protection from corrosion attack due to permeation.