Smc Pneumatics KQ2H11-U02A Push-to-connect Fitting

Product Description

The SMC PNEUMATICS KQ2H11-U02A is a push-to-connect tube fitting connector designed for quick, tool-free tube installation in pneumatic plumbing and fluid-transfer systems. Constructed from brass with a polybutylene body, this fitting accepts 3/8 inch outside diameter tubing and connects to a 1/4 inch thread port. It is rated for a maximum working pressure of 145 psi, making it suitable for standard compressed-air and low-pressure fluid lines. The universal thread type broadens its compatibility across common port configurations. Maintenance technicians, industrial mechanics, and HVAC service professionals routinely install these fittings in compressed-air distribution, pneumatic control circuits, and similar plumbing applications.

This connector is well suited for light industrial, commercial, and mechanical system environments where fast tube connections are required. The push-to-connect design eliminates the need for ferrules, nuts, or thread tape on the tube side, reducing installation time during panel builds, equipment retrofits, and field service calls. It is appropriate for use with polybutylene tubing in pneumatic and compatible fluid-line applications operating within its rated pressure range.

Key Features

• Push-to-connect design allows tool-free tube insertion and secure hold at operating pressure
• Brass and polybutylene construction provides durability in pneumatic service environments
• Rated to 145 psi maximum working pressure for standard compressed-air lines
• Universal thread type for broad port compatibility
• White color finish for visual identification in multi-line installations
• RoHS compliant materials

Compatibility

Designed as an OEM-style push-to-connect connector fitting for pneumatic tubing with a 3/8 inch outside diameter and systems with a 1/4 inch thread port. Compatible with polybutylene tubing within the 145 psi maximum pressure rating.

Installation Notes

Depressurize and lock out the compressed-air or fluid system completely before removing or installing any fittings. Ensure the tube end is cut cleanly and squarely to achieve a proper seal in the collet. Verify that the thread port is clean and undamaged before hand-tightening the fitting; refer to applicable system pressure ratings and relevant plumbing codes for torque and sealant requirements on the threaded side. Confirm the installed tube is fully seated by gently pulling back on it after insertion.