If you're trying to get a PEX pipe plugged into an uncooperative fitting, a PEX expander tool from a hardware brand like Milwaukee will help you to make the connection. Under its ProPEX line of ...

Type A can be joined using a ProPEX expanding tool. More on that later. Although it’s less flexible than type A, PEX type B offers a good balance between stiffness and flexibility. Kinks are ...