Betts aluminum blind flanges are designed for use on cargo tanks with bolt-hole patterns in accordance with TTMA recommended practices. Flange performance is dependent on proper weld procedures with an achievable working pressure of 50 psi [3.4 bar].
Specifications
| Size | Thickness (T) | O.D. | B.C. | of Holes | Hole Dia. |
| 2 in. | .375 in.(9.5 mm) | 4.63 in.(118 mm.) | 3.75 in.(95.2 mm.) | 6 | .44 in.(11.2 mm.) |
| 3 in. | .375 in.(9.5 mm) | 5.63 in.(143 mm.) | 4.88 in.(124 mm.) | 8 | .44 in.(11.2 mm.) |
| 4 in. | .375 in.(9.5 mm) | 6.63 in. (168.4 mm.) | 5.88 in. (149.4 mm.) | 8 | .44 in. (11.2 mm.) |
