The PU Straight Union is a pneumatic fitting used to connect two pneumatic tubes of the same outside diameter (OD) in a straight line. It allows quick extension, repair, or joining of air tubing without the need for clamps or special tools.
Both ends feature push-to-connect collets that securely grip the tubing while maintaining an airtight seal.
Features
• Straight tube-to-tube connection
• Quick push-in installation
• Reusable connection
• Compact and lightweight
• Leak-resistant design
• Suitable for compressed air and vacuum applications

Applications
• Joining pneumatic tubing runs
• Extending air lines
• Repairing damaged tubing
• Automation equipment
• Pneumatic cylinders and valves
• Packaging and assembly machines
• Industrial compressed-air systems

Function: The fitting simply connects two equal-size pneumatic tubes in a straight line while maintaining unrestricted airflow and a secure, leak-free connection. It is one of the most commonly used TPU push-to-connect pneumatic fittings.