FLANGES 2 BLIND FLANGES LARGE DIAMETRE (AS PER API-6A) (5-1) PRESSURE RATING:- API 6BX-2000 PSI WP ( With BX type Ring Gasket) Nominal Size B Flange Thickness T Hub Diametr J1 Groove Depth E Added Hub Thickness, J4 263 ⁄4 4.97 32.91 0.844 0.38 30 5.28 36.69 0.906 0.69 (5-2) PRESSURE RATING:- API 6BX-3000 PSI WP ( With BX type Ring Gasket) 263 ⁄4 6.34 34.25 0.844 0.00 30 6.58 38.19 0.906 0.50 (5-3) PRESSURE RATING:- API 6BX-5000 PSI WP ( With BX type Ring Gasket) 135 ⁄8 4.44 18.94 0.562 0.94 163 ⁄4 5.12 21.88 0.328 0.69 183 ⁄4 6.53 26.56 0.719 0.75 211 ⁄4 7.12 29.88 0.750 0.88 (5-4) PRESSURE RATING:- API 6BX-10000 PSI WP ( With BX type Ring Gasket) 51 ⁄8 3.12 8.81 0.375 0.25 71 ⁄16 4.06 11.88 0.438 0.38 9 4.88 14.75 0.500 0.38 11 5.56 17.75 0.562 0.56 135 ⁄8 6.62 21.75 0.625 0.69 163 ⁄4 6.62 25.81 0.328 1.19 183 ⁄4 8.78 29.62 0.719 1.00 211 ⁄4 9.50 33.38 0.750 1.25 (5-5) PRESSURE RATING:- API 6BX-15000 PSI WP ( With BX type Ring Gasket) 71 ⁄16 4.69 12.81 0.438 0.31 9 5.75 17.00 0.500 0.56 11 7.38 23.00 0.562 0.50 135 ⁄8 8.06 23.44 0.625 0.69 183 ⁄4 10.06 32.00 0.719 1.38 (5-6) PRESSURE RATING:- API 6BX-20000 PSI WP ( With BX type Ring Gasket) 71 ⁄16 6.50 15.19 0.438 0.31 9 8.06 18.94 0.500 0.25 11 8.81 22.31 0.562 0.50 135 ⁄8 11.50 27.31 0.625 0.56 5 PAGE 11 *All dimensions are in inches For Ring Gasket number and PCD of Ring Groove see Page 19, for Ring Groove dimensions see Page 23. J1 DIA 15° MAX SLOPE J4 T B C’BORE E MAX. Blind Flanges (Fig. 7)