What union fitting means
A union is a fitting with a nut in the middle that lets two pipes be disconnected without cutting, often used next to pumps, softeners and water heaters.
Also called pipe union.
Where it matters on a plumbing job
Putting unions on both sides of equipment saves time on the next replacement. It is a small cost to add and a good habit to mention to the customer.
Work it out
- Licensing: Plumbing license rules by state
- Tools, templates and guides: Free plumbing resources