Double Studded Adapter Flanges

Double Studded Adapter Flanges

API 6A 6B 6BX FlangesA Double Studded Adapter (DSA) is commonly used to connect flanges with different nominal sizes, pressure ratings and configurations. For example, a DSA can be used to connect an API 6A 7 1/16 10M flange to an API 6A 5 1/8 5M flange. Although most commonly used to connect API 6A style flanges, WeldFit can design and manufacture DSA's for any combination of API, ASME, MSS and other flange styles.

Key Features:

  • Can be used to connect flanges with any combination of sizes and pressure ratings
  • Custom DSA's are available to transition between API, ASME, MSS or other styles of flanges
  • Supplied with standard or customer specific thicknesses
  • Normally provided with tap-end studs and nuts
  • Available for general service and sour service in compliance with any temperature rating and material requirements specified in API Specification 6A
  • Available with Stainless Steel 316L or Inconel 625 corrosion resistant ring grooves
  • Manufactured in compliance with WeldFit’s ISO 9001:2008 certified quality program

Ordering Information:

  • Nominal size, pressure rating and configuration of each flange
  • API 6A temperature classification or minimum/maximum design temperature
  • API 6A material classification or required material
  • Required thickness, if non-standard
  • Corrosion resistant alloy material, if required — common CRA materials are 316L Stainless Steel and Inconel 625

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