Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
I need to replace a short (less than 5 feet) of a 3/4" hydronic copper piping loop. Can I substitute 3/4" PEX for the copper? Is there a flow-volume or any other issue?
Flow shouldn't be an issue. You can check the table here for copper and here for PEX to see how much pressure you'll lose per a given length of pipe. Copper and PEX are very similar.
Required, but never shown