These black iron fittings connect two male threaded metal pipes together. We offer black unions in different sizes.
The ZMBUN03 from Matco-Norca is a 1/2” Black Union. It's a black malleable iron union that connects ..
The ZMBUN06 from Matco-Norca is a 1-1/4” Black Union. It's a black malleable iron union that connect..