The SMC KQ2T04-00 One-touch Fittings Union Tee is designed for quick and secure connections in pneumatic systems. This fitting is suitable for use with metric tubing and offers a reliable solution for various applications, including vacuum environments down to -100 kPa. The body is available in two types of thread materials and surface treatments, ensuring compatibility with different systems. The fitting's compact design allows for easy installation in tight spaces, making it an excellent choice for complex pneumatic circuits.Features:Compatible with metric tubing sizes Φ4 mmApplicable for vacuum use up to -100 kPaAvailable in brass with or without electroless nickel plating51 different body types to suit various applicationsMultiple thread types including M, R, Rc, G, NPT, and UniSeal methods include sealant, gasket seal, and face seal gasketThis product has been discontinued since May 2012, with the replacement series being KQ2T-00A. For new installations, please refer to the updated product series for enhanced performance and features.