Parker 4FBC4N-B Bulkhead Female Connector 1/4 in Fnpt

Product Description

The PARKER 4FBC4N-B is a brass compression tube bulkhead female connector designed to route tubing through a panel, bulkhead, or enclosure wall while maintaining a secure, leak-resistant seal. It accepts a compression tube connection on one end and a female NPT threaded connection on the other. Rated to a maximum working pressure of 3500 psi, this fitting is well-suited for demanding fluid and instrumentation systems. The brass construction meets ASME-SB75 and ASTM-B75 standards, confirming material traceability and quality for trade and industrial applications. Licensed plumbers, instrumentation technicians, and mechanical contractors typically install this type of fitting.

This fitting is appropriate for use in HVAC, refrigeration, pneumatic, and instrumentation plumbing systems where tubing must pass through a panel or wall partition. The compression-by-FNPT configuration allows connection to standard female pipe-threaded ports on valves, manifolds, or equipment housings on one side, and a compression tube on the other. It is suited for both light commercial and industrial installations where high-pressure integrity and a compact through-wall connection are required.

Key Features

• Bulkhead design allows tubing to pass cleanly through a panel or wall
• Compression x FNPT end connections for versatile system integration
• Maximum working pressure of 3500 psi for high-pressure service
• Brass construction conforming to ASME-SB75 and ASTM-B75 material standards
• 1/4 inch thread size with FPT thread standard
• Overall length of 2.04 inches for compact panel installations

Compatibility

Cross-references to Swagelok part number B-400-71-4. Designed as an OEM-style replacement or direct-fit option for compression tube bulkhead female connector applications using 1/4 inch FNPT porting in brass compression fitting systems.

Installation Notes

Installation should be performed by a qualified plumber or instrumentation technician familiar with compression fitting assembly. Depressurize and isolate the system completely before removing or installing any fitting. Follow the fitting manufacturer's recommended tube preparation and ferrule seating procedure — do not overtighten, as brass compression fittings can be damaged by excessive torque. Verify all connections are leak-free under system pressure before returning the system to service.