Specifications S L T H K � English Metric A N S I J I S A N S I ISOBS JIS NPI60 RCPT55 Necking Full bore Necking Full bore Necking Full bore Necking Full bore Necking Full bore Necking Full bore 1/2 15 21.8 22.2 79 1/2 1/2 61 3.4 3/4 1/2 20 15 27.1 21.8 27.7 22.2 92 3/4 1/2 3/4 1/2 61 3.3 1 3/4 25 20 33.8 27.1 34.5 27.7 111 1 3/4 1 3/4 78 5.5 1 1/4 1 32 25 42.6 33.8 43.2 34.5 120 1 1/4 1 1 1/4 1 84 6.0 1 1/2 1 1/4 40 32 48.7 42.6 49.1 43.2 152 1 1/2 1 1/4 1 1/2 1 1/4 103 9.2 2 1 1/2 50 40 61.1 48.7 61.1 49.1 172 2 1 1/2 2 1 1/2 118 12.9 2 50 61.1 61.1 200 2 2 132 14.3