ProPEX® 1 in copper valved manifolds feature 1/2 in ProPEX® LF brass valve connections allowing for simple and easy isolation of individual loops. Sections can sweat together to extend the number of outlets using a standard 1 in copper coupling. Both 1 in ends are copper pipe size and require a copper end cap, coupling or transition fitting to make the proper system connection. Do not exceed accepted flow rates for 1 in nominal copper.