How to use ASTM F1960 expansion fittings

When making a PEX connection using ASTM F1960 expansion fittings, start by cutting the PEX tubing square. Then slip a PEX ring onto the tubing, making sure it’s fully seated. Use your expansion tool to expand both the tubing and PEX ring. Some power tools have heads that auto-rotate to keep the tubing round. If your tool doesn’t have this feature, rotate the tool slightly between expansions to keep from deforming the tubing and ring. After the expansion is complete, immediately insert your fitting, ensuring its shoulder is snug against the PEX ring. The connection should be secure within seconds.