Smc Pneumatics KQ2H23-00A Union Straight Tube Fitting 145 Psi

Product Description

The SMC PNEUMATICS KQ2H23-00A is a push-to-connect union straight tube fitting designed for quick, tool-free connections in pneumatic plumbing systems. Built with a brass body and polybutylene components, it joins two tube runs in a straight inline configuration with a rated maximum working pressure of 145 psi. The fitting accommodates a 3.20 mm tube outside diameter and spans an overall length of 27.60 mm (approximately 1.09 inches). It is sized and rated for use in compressed air and low-pressure pneumatic circuits and is a standard pick for HVAC technicians, industrial maintenance techs, and pneumatic system installers working with small-bore tubing.

This fitting is suited for residential and light commercial pneumatic control lines, condensate management tubing, and instrument air applications where a reliable inline union is needed. Its push-to-connect design allows fast field assembly without thread cutting, soldering, or specialized tooling. The fitting operates across a temperature range of 23 degrees F to 140 degrees F, making it appropriate for typical indoor mechanical and equipment room environments. It carries RoHS compliance, which is relevant for projects with environmental material restrictions.

Key Features

• Push-to-connect design allows fast, tool-free tube insertion and secure retention
• Brass body construction for corrosion resistance and durability in pneumatic service
• Rated to 145 psi maximum working pressure for standard compressed air circuits
• Straight union configuration joins two tube ends inline without directional change
• Fits 3.20 mm outside diameter tubing for small-bore pneumatic and control lines
• RoHS compliant materials for use on environmentally restricted projects

Compatibility

Designed as an OEM-style push-to-connect union fitting for small-bore pneumatic tubing systems operating at up to 145 psi within a temperature range of 23 degrees F to 140 degrees F.

Installation Notes

Installation is typically performed by a licensed HVAC technician or pneumatic systems technician. Before servicing any pneumatic line, depressurize the circuit fully and verify zero pressure before inserting or removing tubing. Ensure tube ends are cut cleanly and squarely with a tube cutter for proper seating and seal integrity. Follow all applicable codes and equipment manufacturer guidelines for pneumatic control line service.