Smc Pneumatics KQ2H04-01AS Push-to-connect Fitting 1/8 Bspt

Product Description

The SMC PNEUMATICS KQ2H04-01AS is a push-to-connect tube fitting connector designed for use in pneumatic plumbing systems. It accepts a 4 mm outside diameter tube and seals to a 1/8 inch BSPT threaded port with a maximum working pressure rating of 145 psi. The fitting body is constructed from brass with a polybutylene tube collet assembly. This style of fitting is installed by plumbers, pipefitters, and pneumatic system technicians in applications where fast, tool-free tube connections are required at threaded ports.

This connector fitting is suited for residential and light commercial pneumatic tubing systems, compressed air distribution, and fluid control plumbing lines. It is rated for service between 23 degrees F and 140 degrees F, making it appropriate for indoor climate-controlled environments and standard shop-air installations. The BSPT thread form is a parallel taper thread used in metric and international pneumatic and hydraulic assemblies.

Key Features

• Push-to-connect design allows tool-free tube insertion and positive retention
• Brass body construction for corrosion resistance and durability in compressed air service
• Polybutylene collet provides reliable tube grip at rated pressures up to 145 psi
• 1/8 inch BSPT male thread for connection to standard metric and international threaded ports
• Rated operating range of 23 degrees F to 140 degrees F
• RoHS compliant materials

Compatibility

Designed as an OEM-style push-to-connect connector for pneumatic tubing systems using 4 mm outside diameter tube with 1/8 inch BSPT threaded port interfaces.

Installation Notes

Installation is performed by a qualified pipefitter or pneumatic system technician. Depressurize the system and verify zero line pressure before removing or installing any fittings. Ensure the BSPT threads are clean and apply appropriate thread sealant compatible with the system fluid before torquing the fitting into the port body. Insert tubing fully into the collet until it seats; to release, depress the collet ring before pulling the tube free.