Couplers & Unions

Couplers and unions for joining AN lines together — extending a run, repairing a damaged section, or connecting two fittings without a hose in between.

Quick guide:

  • Female-to-female couplers join two male AN fittings inline.
  • Male unions join two female flare fittings, common for hard-line repairs.
  • Match the AN size on both sides to what you're connecting — couplers don't change size, only adapters do (see ORB Adapters or Expanders & Reducers if you need to step up/down a size).