Parker 4-4 GH2BZ-B Bulkhead Female Connector 1/4 in

Product Description

The PARKER 4-4 GH2BZ-B is a brass bulkhead female connector designed to route tubing through a panel, bulkhead, or enclosure wall using a compression-by-FNPT end connection configuration. The fitting accepts a 1/4-inch compression tube on one side and a 1/4-inch female NPT thread on the other, allowing a technician to transition between compression tubing and a threaded port while maintaining a sealed, panel-mounted installation. Rated to 3500 psi maximum working pressure and manufactured to ASME-SB75 and ASTM-B75 brass standards, this fitting is built for demanding fluid and gas system applications in HVAC, refrigeration, instrumentation, and plumbing environments.

This connector is suited for installations where tubing must pass through a cabinet wall, manifold panel, or bulkhead plate and terminate at a female NPT port on the opposite side. It is commonly installed in commercial and industrial control panels, instrumentation enclosures, and equipment skids where tube routing and panel penetration integrity are both required. The 1/4-inch thread size fits standard small-bore tubing runs found in pneumatic controls, refrigerant monitoring lines, and hydraulic instrument loops. Overall length is 2.04 inches, keeping the installed footprint compact in tight panel layouts.

Key Features

• Compression x FNPT end connections allow direct transition between tube and threaded-port plumbing
• Bulkhead design enables clean panel-mount installation with tubing passing through the wall
• 3500 psi maximum working pressure supports high-pressure instrumentation and fluid systems
• Brass construction conforming to ASME-SB75 and ASTM-B75 for corrosion resistance and machinability
• Compact 2.04-inch overall length minimizes space requirements inside enclosures
• 1/4-inch thread size fits common small-bore tube and port configurations

Compatibility

Designed as an OEM-style replacement or direct-install fitting for compression tube bulkhead applications requiring a 1/4-inch Compression x FNPT connection in brass. Cross-references to Swagelok part number B-400-71-4.

Installation Notes

Installation is typically performed by a licensed plumber, pipefitter, or instrumentation technician. Depressurize and isolate the fluid or gas system completely before removing or installing any compression fitting. Use the appropriate tube cutter and deburring tool to prepare tubing ends before seating into the compression ferrule. Follow applicable codes including ASME B31.1 or B31.3 for pressure piping to verify suitability for the intended working pressure and fluid service.