Encyclopedia & FAQ's

DIY Frequently Asked Questions / Union


  • DIY Frequently Asked Questions / Union')"> A three-part fitting that connects any standard size pipe where it may be necessary to disconnectt later, such as on a water heater.
  • Connects to male threaded ends.
  • Also known as a ground joint union.
  • A Transition Union joins different types of tubing, such as CPVC to brass.