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The HAM-LET 3102535 is a brass compression tube male branch tee designed to create a branch connection in instrument or process tubing lines. The fitting connects two compression ends to one male NPT threaded outlet, allowing a single tube run to split or branch off to a threaded port on a valve, manifold, or instrument body. With a 1/4-inch thread size and MPT thread standard, this fitting is sized for common small-bore tubing applications. The all-brass construction resists corrosion and handles moderate pressures typical of fluid and gas distribution systems. HVAC technicians, plumbers, and instrumentation installers are the primary trades working with this type of fitting.
This fitting suits residential and light commercial applications where a compression tubing branch is needed in gas, water, or instrument air lines. The compression ends accept standard tubing without soldering or brazing, making it practical for field installations where open flame is restricted or impractical. The MNPT outlet threads directly into female-threaded ports on inline components. It is particularly well-suited for control line installations, gauge connections, and instrument sensing lines where a compact, leak-tight branch is required.
Cross-references Swagelok part number B-600-3TTM. Designed as an OEM-style replacement or direct substitute for 1/4-inch compression male branch tee fittings in instrument tubing, HVAC control lines, and light commercial fluid distribution systems.
Installation is performed by qualified plumbers, HVAC technicians, or instrumentation technicians. Shut off and depressurize the line completely before removing or installing any compression fitting. Hand-tighten the compression nut onto the tubing, then advance with a wrench per standard compression fitting practice - do not overtighten, as brass fittings can be damaged by excess torque. The MNPT outlet must be wrapped with thread sealant tape or paste rated for the service fluid before threading into the mating port. Follow applicable IPC or IFGC requirements for the specific system type.
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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