Smc Pneumatics KQ2H01-35AS Push-to-connect Tube Fitting

Product Description

The SMC PNEUMATICS KQ2H01-35AS is a push-to-connect tube fitting designed for quick, tool-free pneumatic line connections in compressed air and low-pressure fluid systems. The fitting features a 1/4 inch NPT male thread and accepts 1/8 inch OD tubing. The body is constructed from brass with a polybutylene insert, rated to 145 psi maximum working pressure. Operating temperature range runs from 23 degrees F to 140 degrees F, making it suitable for indoor industrial and light commercial applications. Licensed plumbers, pipefitters, and pneumatic systems technicians are the typical installers for this type of fitting.

This fitting is used in pneumatic control circuits, compressed air distribution lines, and instrumentation tubing runs where a compact inline connector is needed. Its push-to-connect design allows fast tubing insertion without ferrules, compression sleeves, or soldering. Typical applications include pneumatic actuator supply lines, solenoid valve pilot circuits, and machine tool air circuits in manufacturing and process environments. The 1/4 inch NPT thread allows direct connection to standard pneumatic manifolds, valves, and fittings commonly found in industrial equipment.

Key Features

• Push-to-connect design accepts 1/8 inch OD tubing without additional tooling
• 1/4 inch NPT male thread for standard port compatibility
• 145 psi maximum working pressure rating
• Brass body with polybutylene component construction
• Operating range of 23 degrees F to 140 degrees F
• RoHS compliant materials

Compatibility

Designed as an OEM-style replacement or direct-fit connector for pneumatic tubing systems using 1/8 inch OD tubing with 1/4 inch NPT ported components.

Installation Notes

Installation should be performed by a qualified pipefitter or pneumatic systems technician. Depressurize the system fully before removing or installing any fittings. Apply thread sealant appropriate for pneumatic service to the NPT threads before tightening. Verify that tubing is cut squarely and fully seated in the fitting body before returning the circuit to pressure.