Parker BD-KP4472 Brass Compression Tube Union

Product Description

The PARKER BD-KP4472 is a brass compression tube union designed to join two lengths of tubing in a straight-line connection using compression-style end connections on all ports. This fitting creates a secure, leak-resistant joint without soldering or threading, making it a reliable choice for field repairs and new installations alike. Constructed from brass, it offers solid corrosion resistance in both wet and dry service environments. HVAC technicians, plumbers, and refrigeration mechanics commonly use compression unions when connecting copper or compatible soft tubing in tight spaces or where heat cannot be applied.

This compression union is suited for residential and light commercial applications where a straight inline tube connection is required. It is a practical solution for joining tubing runs in refrigerant lines, water supply lines, pneumatic control circuits, and similar low-to-medium pressure plumbing or HVAC control systems. The compression-style connection allows for relatively fast assembly and disassembly without specialized tooling beyond a standard wrench.

Key Features

• Brass construction provides corrosion resistance and durability in plumbing and HVAC environments
• Compression x Compression x Compression end connections on all three ports for tool-free solder-free assembly
• Straight union configuration for inline tube-to-tube joining
• Compact form factor suitable for installations with limited clearance
• Single-piece packaging supports one-off service and repair use

Compatibility

Designed as an OEM-style compression union replacement or new-installation fitting for use with compatible compression-end tubing in plumbing, HVAC, and refrigeration control line applications.

Installation Notes

Installation should be performed by a licensed plumber, HVAC technician, or qualified tradesperson in accordance with applicable local codes, including IPC and IFGC guidelines where relevant. Shut off and depressurize the line before disassembly or fitting installation. Ensure tubing ends are cut cleanly and deburred before seating the compression ferrule to achieve a proper seal. Do not overtighten compression nuts, as this can damage the ferrule and cause leaks.