Dimension of Class 150 Full Face Gaskets - ASME B16.47 Series A Flanges

Expired

Dimensions of Class 150 Full Face Gaskets (above 24 inches) as per ASME B16.21 to Suit ASME B16.47 Series A Flanges.

Full Face Gasket Dimensions

Nominal
Pipe Size
(NPS)		 Inside Diameter
(ID)		 Outside Diameter
(OD)		 No. of Bolt
Holes		 Bolt Hole
Diameter
(inches)		 Bolt Circle Diameter
(BCD)
inches mm inches mm inches mm
26 26.00 660 34.25 870 24 1.38 31.75 806.5
28 28.00 711 36.50 927 28 1.38 34.00 863.6
30 30.00 762 38.75 984 28 1.38 36.00 914.4
32 32.00 813 41.75 1060 28 1.63 38.50 977.9
34 34.00 864 43.75 1111 32 1.63 40.50 1028.7
36 36.00 914 46.00 1168 32 1.63 42.75 1085.9
38 38.00 965 48.75 1238 32 1.63 45.25 1149.4
40 40.00 1016 50.75 1289 36 1.63 47.25 1200.2
42 42.00 1067 53.00 1346 36 1.63 49.50 1257.3
44 44.00 1118 55.25 1403 40 1.63 51.75 1314.5
46 46.00 1168 57.25 1454 40 1.63 53.75 1365.3
48 48.00 1219 59.50 1511 44 1.63 56.00 1422.4
50 50.00 1270 61.75 1568 44 1.88 58.25 1479.6
52 52.00 1321 64.00 1626 44 1.88 60.50 1536.7
54 54.00 1372 66.25 1683 44 1.88 62.75 1593.9
56 56.00 1422 68.75 1746 48 1.88 65.00 1651.0
58 58.00 1473 71.00 1803 48 1.88 67.25 1708.2
60 60.00 1524 73.00 1854 52 1.88 69.25 1759.0
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