Parker 171HD-4-2 Compression Male Run Tee 1/8 Inch

Product Description

The PARKER 171HD-4-2 is a brass compression male run tee designed for use in fluid and pneumatic distribution lines. It features a tee-style body with compression connections on the run ends and a male NPT (MNPT) branch port, allowing a tube line to continue straight through while adding a threaded branch takeoff. Rated to 2100 psi maximum working pressure, this fitting handles demanding service conditions across a wide temperature range of -65 to 249 degrees F. The all-brass construction provides corrosion resistance and durability in both wet and dry service environments. It is typically installed by plumbers, HVAC technicians, or instrumentation fitters working on copper or compatible tubing systems.

This fitting is suited for residential and commercial applications where a branch connection is needed along a compression tube run without interrupting flow. Common install scenarios include instrument tubing manifolds, refrigeration pilot lines, pneumatic control circuits, and general fluid distribution systems that require a reliable threaded branch port alongside continuous tube routing. The 1/8 inch thread size is standard for small-bore instrumentation and control line work.

Key Features

• Tee configuration with compression run connections and a male NPT branch port for versatile inline branching
• 2100 psi maximum working pressure for demanding fluid and pneumatic service
• Operating temperature range of -65 to 249 degrees F
• Brass construction for corrosion resistance and compatibility with common tube materials
• 1/8 inch NPT thread size suits small-bore instrumentation and control line applications
• Compact, single-piece body — no secondary fittings required at the branch

Compatibility

Designed as an OEM-style compression tube fitting for use in small-bore fluid and pneumatic tubing systems requiring a male NPT branch takeoff along a continuous compression tube run.

Installation Notes

Installation should be performed by a licensed plumber, HVAC technician, or qualified instrumentation fitter. Depressurize and isolate the system fully before disassembly or fitting installation. Ensure tubing ends are cut square, deburred, and fully seated against the fitting body before tightening the compression nut. Apply thread sealant to the MNPT branch port in accordance with applicable plumbing or mechanical codes.