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The PARKER 6-4 GH2BZ-B is a bulkhead female connector designed to route tubing through a panel or wall while maintaining a secure, leak-resistant seal. It features compression-style inlet connections paired with a female NPT (FNPT) outlet, allowing technicians to transition between compression tubing and threaded pipe assemblies at a bulkhead mounting point. Constructed from brass conforming to ASME-SB75 and ASTM-B75 standards, this fitting handles working pressures up to 2300 psi. With an overall length of 2.17 inches and a 1/4 inch thread size, it is a compact, durable solution for instrumentation, HVAC, and fluid system plumbing applications.
This fitting is suited for residential and commercial installations where tubing must pass through cabinetry, enclosures, or equipment panels. It is commonly used in refrigeration lines, pneumatic controls, instrumentation tubing runs, and hydraulic or fluid distribution systems. Licensed HVAC technicians, plumbers, and instrumentation specialists install this type of fitting when a clean bulkhead transition is required between compression tubing and a female-threaded port. The compression x FNPT configuration simplifies field assembly without requiring soldering or specialized tooling.
Designed as an OEM-style replacement or direct-install bulkhead fitting for compression tubing systems using 1/4 inch female NPT connections. Cross-references Swagelok part number B-600-71-4.
Installation should be performed by a qualified HVAC technician, plumber, or instrumentation specialist familiar with compression fittings and threaded connections. Depressurize and isolate the system completely before removing or installing any fittings. Hand-tighten the compression nut first, then use an appropriately sized wrench to achieve a proper seat without over-torquing the brass body. Follow applicable codes including ASME and local mechanical codes when installing in pressurized fluid or refrigerant systems.
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