Smc Pneumatics KCH04-01S Push-to-connect Fitting

Product Description

The SMC PNEUMATICS KCH04-01S is a push-to-connect tube fitting connector designed for quick, tool-free pneumatic line assembly. It accepts a 4 mm outside diameter tube and features a 1/8 inch threaded port for installation into pneumatic equipment, manifolds, or valve bodies. Constructed from brass with a polybutylene tube insert, this connector handles working pressures up to 145 psi. It is a compact fitting at 26.10 mm overall length and weighs just 0.01 pounds, making it well suited for tight panel or cabinet installations. Licensed technicians and pneumatic system assemblers typically specify this fitting for instrument-grade air lines and light industrial pneumatic circuits.

This fitting is used in pneumatic tubing systems where a reliable, low-profile connection point is needed between flexible tubing and a threaded port. Common install scenarios include automation equipment, pneumatic control panels, air-actuated valves, and compressed air distribution networks in both light industrial and commercial environments. The push-to-connect design allows fast tube insertion and secure retention without ferrules or compression sleeves, reducing assembly time in high-volume or service applications.

Key Features

• Push-to-connect design allows tool-free tube insertion and removal
• Rated to 145 psi maximum working pressure
• Brass body construction for durability and corrosion resistance
• Accepts 4 mm outside diameter polybutylene tubing
• 1/8 inch threaded port for direct installation into equipment
• RoHS compliant materials

Compatibility

Designed as an OEM-style push-to-connect fitting for pneumatic tubing systems using 4 mm outside diameter tube and 1/8 inch threaded ports.

Installation Notes

Installation is performed by pneumatic system technicians or automation mechanics. Depressurize and lock out the compressed air supply before disconnecting or replacing any pneumatic fitting. Verify thread type and size match the receiving port before installation to avoid cross-threading or seal failure. Do not exceed the rated 145 psi working pressure in service.