Try this link.
http://www.pbpsa.com/eng/tech-pipeoxy.asp
There's a good explanation here:
http://www.pexuniverse.com/content/pex-tubing-types-oxygen-barrier-vs-non-barrier
To avoid corrosion in heating and radiant heating systems, oxygen barrier PEX must be used. Do not use non-barrier PEX for your heating project if you have any cast iron in the system. Source: PexUniverse.com (Learning Center)
hahahahahahahha, yes
At what temp does pex pipe freeze
yes it will handle the heat as long as your boiler is started with copper
To connect PEX pipe effectively and securely, you can use a PEX crimp ring or a PEX clamp ring along with a PEX crimping tool. First, slide the ring over the end of the PEX pipe, then insert the fitting into the pipe. Use the crimping tool to compress the ring tightly around the fitting. This creates a secure and leak-proof connection.
Yes
To learn how to connect PEX pipes properly, you can follow these steps: Cut the PEX pipe to the desired length using a PEX pipe cutter. Insert a PEX fitting into the end of the pipe. Use a crimping tool to secure the fitting onto the pipe. Repeat the process for the other end of the pipe. Test the connection for leaks by running water through the pipes.
YES. As long as the mfr had it tested and passed the nec stamp. Even if they didn't spend the boat load of cash to pass the test, it more than likely meets the criteria and it will work. More than likely better than Pex with out the O2 barrier. Problem arises from not having that approval stamp. That will more than likely break the local and National codes for residential. And definitely the ones for commercial, rest... Best if you use original Non-Barrier PEX or PEX-Al-PEX pipe which approved for use for both plumbing and heating applications.
Yes, PEX pipe can be buried underground as it is commonly used for underground water supply lines.
The best way to connect a PEX pipe to a PVC pipe using a PEX to PVC adapter is to follow the manufacturer's instructions carefully. Typically, this involves cutting the PEX and PVC pipes to the correct length, deburring the edges, and then using the appropriate tools to secure the adapter in place. It is important to ensure a tight and secure connection to prevent leaks.
To connect PVC pipe to PEX, you'll need a few specific fittings. Start by using a PVC to PEX adapter, which usually has a female threaded end for the PVC and a barbed end for the PEX. First, glue the PVC adapter onto the PVC pipe using PVC cement, then slide a PEX clamp ring over the PEX pipe, insert the PEX into the barbed end of the adapter, and secure it with a crimp or clamp fitting. Make sure to follow all manufacturer instructions for a secure and leak-free connection.
To use PEX pipe effectively for plumbing projects, first, measure and cut the pipe to the desired length using a PEX pipe cutter. Next, insert the appropriate fittings onto the pipe and secure them with crimp rings or push-to-connect fittings. Use a PEX expansion tool to expand the pipe and fittings for a secure connection. Finally, test the connections for leaks before covering them with insulation or drywall.