Parker 6-6 Gbz-b Compression Tube Connector 3/8 in Brass

Product Description

The PARKER 6-6 GBZ-B is a brass compression tube connector designed to join tubing to a female NPT threaded port in fluid and gas distribution systems. This fitting creates a leak-resistant mechanical connection without soldering or welding, using a compression sleeve and nut to grip the tube on one end and a 3/8 inch FNPT thread on the other. Rated to 2300 psi maximum working pressure, it is built for demanding service in HVAC, pneumatic, hydraulic, and plumbing applications. Weighing 0.15 pounds, it is a compact, single-piece brass fitting suited for installation by licensed plumbers, HVAC technicians, and pipefitters.

This connector is used in residential and commercial systems where tubing must transition to a female NPT threaded connection. Common install scenarios include refrigerant-adjacent tubing runs, instrument air lines, compressed gas distribution, and hydronic system fittings. The compression end accepts standard tubing and the FNPT end threads directly into a female pipe port, making it a straightforward transition fitting in tight mechanical spaces or panel-mounted assemblies.

Key Features

• Compression x FNPT end connections allow tubing to transition to female NPT threaded ports without soldering
• 2300 psi maximum working pressure rating suitable for high-pressure fluid and gas lines
• Full brass construction provides corrosion resistance in wet and humid environments
• 3/8 inch thread size with FPT thread standard for consistent sealing with standard pipe fittings
• Compact and lightweight at 0.15 pounds for use in confined installations

Compatibility

Designed as an OEM-style replacement or new-installation compression connector for systems requiring a 3/8 inch compression to FNPT brass fitting. Also referenced by Swagelok part number B-600-7-6 for cross-reference purposes.

Installation Notes

Installation should be performed by a licensed plumber, pipefitter, or qualified HVAC technician. Depressurize and isolate the line completely before disconnecting or installing any compression fitting. Do not overtighten the compression nut, as excessive force can deform the ferrule and compromise the seal. Thread sealant or PTFE tape applied to the FNPT connection should comply with the fluid or gas service in accordance with applicable IPC or IFGC guidelines.