Parker 4-2 Hbz-ss Compression Tube Union Stainless Steel

Product Description

The PARKER 4-2 HBZ-SS is a compression tube union designed to join two compression-end tube lines in a single inline fitting. Constructed from stainless steel, this union provides a rated maximum working pressure of 10,300 psi, making it well-suited for high-pressure instrumentation, hydraulic, and fluid-system applications. The compression-by-compression end connections allow tool-assisted assembly without welding or brazing, reducing installation time and supporting field service on pressurized tubing runs. Licensed plumbers, pipefitters, and instrumentation technicians are the primary installers of this fitting type.

This fitting is used in applications where two tube ends must be joined inline and the connection must hold under elevated system pressures. Typical installations include industrial instrumentation lines, process control tubing, hydraulic test equipment, and high-pressure fluid transfer systems. The stainless steel body resists corrosion in wet, chemical-adjacent, or outdoor environments where carbon steel fittings would be unsuitable. The compression-style connection suits hard-drawn tubing in both residential and commercial-grade mechanical and process systems.

Key Features

• Maximum working pressure rated to 10,300 psi for high-pressure service
• Stainless steel construction for corrosion resistance in demanding environments
• Compression x Compression end connections on both sides for tool-assisted, no-weld assembly
• Union-style body allows tube disconnection and reconnection without disturbing the line
• Compact, lightweight form factor at 0.0636 pounds

Compatibility

Designed as an OEM-style compression tube union for use in high-pressure instrumentation, hydraulic, and fluid-transfer tubing systems requiring compression-style end connections.

Installation Notes

Installation should be performed by a licensed pipefitter, plumber, or qualified instrumentation technician familiar with high-pressure compression fittings. Depressurize and isolate the tubing circuit completely before disassembly or installation. Use appropriate tube preparation tools to ensure clean, square tube ends before seating the compression ferrules. Verify that tubing material, outer diameter, and wall thickness are compatible with this fitting before torquing the compression nuts.