Introdution: ULG type marine self-closing tubular type glasslevel gauge which has the charecteristics of novel design,installing n breaks,theinternalvalve canclose automaticallywithoutliquidleakage. Model Sign: C-Marine Chamber material: A-Q235A B-1Cr18Ni9Ti Connection type: H-Welld type F-Flange type L-Niminal length ULG- Tubular type glass level gauge