Models ASME B16.5 Class 150 Flanges Sizes NPS 1/2 - 10 6 193 2 Swagelok VCR fittings (1/4" and 1/2") 12 361 0 Swagelok VCO fittings (1/4" and 1/2") 7 97 0 Swagelok Micro-Fit welded fittings (1/4" and 1/2") 3 46 0