Please review the FSA APPENDIX B: Common Flange Dimensions/Drilling Chart via the following link for standard available drilling patterns for expansion joints, rubber pipe, retaining rings and control units. For custom drilling or flange data not shown, please contact us.
1) When ordering/specifying expansion joints, rubber pipe, retaining rings, or control unit assemblies, always note the mating flange drilling specification or the actual dimensions if specification is unknown. In the absense of this data, these products will be drilled to ANSI B16.1 Class 125, or to the individual manufacturer's printed drilling specification.
2) When products are manufactured to ASTM F1123-87. They should be drilled to MIL-F-20042C or ANSI B16.5 Class 150, as specified by the customer.
4) Drilling is available but not shown for the following: 1914-78", 90"; AWWA C207-78-114", 126", 138".