Parker 12-4 Hbz-ss Compression Tube Union 3/4 X 1/4 Ss

Product Description

The PARKER 12-4 HBZ-SS is a compression tube union designed to join two compression-end tube lines in a single in-line connection. Constructed from stainless steel, it connects a 3/4-inch outside diameter tube to a 1/4-inch outside diameter tube with no welding or flaring required. The fitting is rated to 5800 psi maximum working pressure, making it suitable for high-pressure fluid and gas transfer applications. It is typically installed by plumbers, pipefitters, and instrumentation technicians working on process lines, hydraulic systems, or industrial fluid distribution systems where a reliable, corrosion-resistant union is required.

This fitting is well-suited for industrial and commercial process piping applications where stainless steel is specified for corrosion resistance or system cleanliness requirements. The compression-by-compression end connections allow the fitting to be installed in-line without special tooling beyond standard tube cutters and wrenches. Applications include instrumentation tubing runs, chemical process lines, and high-pressure fluid transfer systems. Its compact form factor and stainless steel construction make it a practical choice in environments exposed to moisture, chemicals, or elevated temperatures.

Key Features

• Stainless steel construction provides corrosion resistance in demanding process environments
• Compression x compression end connections eliminate the need for welding or flaring
• Rated to 5800 psi maximum working pressure for high-pressure service
• Joins 3/4-inch OD tube to 1/4-inch OD tube in a single union fitting
• Compact union design allows installation or removal without disturbing adjacent tubing runs

Compatibility

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

Installation Notes

Installation should be performed by a licensed pipefitter, plumber, or qualified instrumentation technician. Depressurize and isolate the tubing system fully before disconnecting or installing any compression fitting. Ensure tube ends are cut square and deburred before seating in the compression nut to achieve a proper seal. Follow applicable piping codes, including ASME B31.3 for process piping, and verify that the fitting material and pressure rating are appropriate for the media and system conditions.