Brennan KP4269 Compression Tube Union 3/8 X 1/4 Stainless Steel

Product Description

The BRENNAN KP4269 is a stainless steel compression tube union designed to join two compression-end tube lines in a single inline connection. The union accepts tubes with outside diameters of 3/8 inch and 1/4 inch, making it a reducing union suited for systems where two different tube sizes must be joined without welding or flaring. Stainless steel construction provides corrosion resistance and durability in demanding fluid or gas handling applications. This fitting is installed by plumbers, HVAC technicians, and instrumentation specialists working on tubing runs that require a secure, leak-resistant mechanical connection.

This compression tube union is used in fluid transfer, instrumentation, and gas distribution tubing systems across residential, commercial, and industrial settings. Its reducing configuration makes it appropriate for inline transitions between 3/8 inch OD and 1/4 inch OD tubing runs. Typical installation scenarios include hydraulic lines, pneumatic control circuits, and process instrumentation where tube integrity and pressure retention are critical. The compression-style end connections allow for tool-based assembly without specialized welding equipment.

Key Features

• Reducing compression union connects 3/8 inch OD tube to 1/4 inch OD tube in a single fitting
• Compression x compression end connections on both sides for tool-based, no-weld assembly
• Stainless steel construction for corrosion resistance in fluid and gas service
• Inline union design maintains flow path alignment between joined tube segments
• Compact form factor suitable for tight tubing runs and panel installations

Compatibility

The KP4269 is cross-referenced with Swagelok part number SS-600-6-4. It is designed as an OEM-style replacement or direct substitute compression tube union for 3/8 inch x 1/4 inch OD tube applications using standard compression-style fittings.

Installation Notes

This fitting is typically installed by licensed plumbers or instrumentation technicians working on tubing systems. Depressurize and isolate the tubing circuit fully before disassembly or installation. Compression fittings require proper ferrule seating and should be tightened to hand-tight plus the appropriate fractional turn per the fitting manufacturer's assembly guidelines - do not overtighten, as this can deform ferrules and compromise the seal. Follow applicable codes including ASME B31.1 or B31.3 for pressure piping systems where required.