The Accutube Series 25D Standard Probe is constructed of 316LSS probe and a 316SS instrument flange. The instrument flange is 1 1/4" 150# ANSI flange standard (2 3/8" probe has 2 1/2" 150# flangs). Series 25D probe is double mount-supported. This Accutube is provided complete with mounting flange and weldoelt and a thredolet for double mounting. The Series 25D Accutube is factory fitted with 1/2" FNPT connections and is shipped with mounting hardware coomplete. Series 25D Accutubes are available for line sizes 2" through 72".