... mm (PSI/Bar) (PSI/Bar) 1 1/4" 32 300/21 400/28 900/63, 1200/84 1 1/ ... 2" 38 300/21 400/28 FM 900/63, 1200/84 1 ... 3/4" 45 300/21 400/28 FM 900/63, 1200/84 2 ... " 50 300/21 400/28 900/63, 1200/84 2 1 ... /2" 65 300/21 400/28 FM, UL 900/63, 1200/84 ... 2 3/4" 70 300/21 400/28 900/63, 1200/84 3" 75 300/21 400/28 900/63, ...