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The HAM-LET 3102591 is a brass compression tube bulkhead union designed to create a leak-tight tube connection through a panel, wall, or enclosure. Both ends accept standard compression fittings, allowing tubing to pass from one side of a bulkhead to the other without welding or soldering. Manufactured to ASTM B68 and ASTM B75 standards, this fitting is built for reliable performance in fluid and gas distribution systems. Licensed plumbers, HVAC technicians, and instrumentation professionals install this type of fitting where tube runs must penetrate a structural barrier cleanly and securely.
This bulkhead union suits residential and light commercial applications where tube lines must cross panel walls or equipment enclosures. It is commonly used in refrigeration, pneumatic control lines, and process fluid systems. The compression-by-compression end configuration means no special tooling beyond a tube cutter and wrench is required for a proper installation. Rated for a minimum temperature of -20 degrees C and a maximum of 37 degrees C, it is suited for moderate-temperature service environments.
Cross-references to Swagelok part number B-400-61. Designed as an OEM-style replacement or direct substitute for standard compression-style bulkhead unions used in tube instrumentation and fluid distribution systems.
Installation should be performed by a qualified plumber or instrumentation technician. Shut off and depressurize the system completely before removing any existing fittings or inserting the bulkhead union through the panel. Ensure the panel hole diameter matches the fitting body to achieve proper seating and locknut engagement. Follow applicable IPC or ASME B31 piping code requirements for the system type being serviced.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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