Parker CPI Stainless Steel Tube Union Fittings

Parker CPI™ HBZ Series tube unions and reducing unions provide secure tube-to-tube connections for instrumentation, process control, analytical, and industrial fluid systems. Designed with Parker's proven CPI™ single-ferrule compression technology, these fittings deliver reliable leak-free performance while simplifying installation and maintenance.

Manufactured from heat-code traceable 316 stainless steel, these fittings are engineered for demanding applications where corrosion resistance, vibration resistance, and long-term reliability are critical.

Key Features

• Parker CPI™ tube fitting design
• Tube-to-tube union and reducing union configurations
• Single-ferrule compression sealing technology
• 316 stainless steel construction
• Heat code traceable material
• Excellent vibration resistance
• Leak-free sealing performance
• No tube twisting during installation
• Supports repeated remakes and maintenance
• Compatible with instrumentation and process tubing systems

Construction Details

The CPI™ single-ferrule design creates a spring-loaded sealing effect that maintains constant tension between the fitting body and nut, helping ensure dependable sealing performance under vibration and pressure fluctuations.

During assembly, make-up forces are transmitted axially rather than twisting the tubing, helping preserve tubing integrity and reducing installation stress.

The fitting design minimizes body and ferrule distortion, allowing easier disassembly and multiple remakes without compromising sealing performance.

Material & Performance

Standard construction utilizes heat-code traceable 316 stainless steel for excellent corrosion resistance and suitability in demanding industrial environments.

Parker CPI™ fittings are widely used throughout chemical processing, petroleum production, power generation, pulp and paper facilities, analytical systems, and industrial instrumentation applications requiring dependable tube connections.

The design has been validated through extensive testing and decades of field-proven service in critical fluid handling applications.

Important Notes

This listing includes multiple Parker CPI™ HBZ union and reducing union size variations for fractional tube applications.

Tubing and fitting materials should generally be matched for optimal compatibility and performance.

Refer to Parker installation and tubing selection documentation for pressure ratings, assembly instructions, and application-specific recommendations.