Parker 171C-4-4 Compression Male Run Tee 1/4 in Brass

Product Description

The PARKER 171C-4-4 is a brass compression tube male run tee designed for use in fluid and pneumatic line assemblies where a branch connection must be made in the run of a tube without interrupting flow direction. The fitting uses a compression-style end connection on both run ports and a male NPT (MNPT) branch port, allowing inline tube routing with a threaded branch takeoff. Rated to 300 psi maximum working pressure and built to SAE J-512 standards, this tee handles operating temperatures from -65 degrees F to 250 degrees F. It is suited for hydraulic, refrigeration, and instrumentation tubing work where a reliable, leak-resistant mechanical connection is required.

This fitting is installed in residential and light commercial systems where 1/4-inch OD tubing intersects with a threaded port — common in refrigeration lines, compressed air distribution, fuel systems, and hydraulic instrument tubing. The male NPT branch allows direct threaded attachment to a valve, gauge, sensor, or manifold without additional adapters. HVAC technicians, plumbers, and fluid-systems mechanics working with small-bore tubing will encounter this fitting in service and new-construction applications alike.

Key Features

• Brass construction provides corrosion resistance and good machinability for reliable bite-ring sealing
• Compression x MNPT x Compression end connections allow inline tube run with a threaded branch takeoff
• Rated to 300 psi maximum working pressure for use in moderate-pressure fluid and pneumatic systems
• Wide temperature range of -65 degrees F to 250 degrees F suits refrigeration and heated-line applications
• Meets SAE J-512 standards for compression tube fittings
• 1/4-18 NPTF thread on the male branch port ensures pressure-tight threaded engagement

Compatibility

Designed as an OEM-style and aftermarket replacement compression tube male run tee for systems using 1/4-inch OD tubing with a 1/4-18 NPTF male branch connection, conforming to SAE J-512 dimensional standards.

Installation Notes

Installation should be performed by a qualified technician familiar with compression fittings and applicable codes such as the IPC or system-specific refrigeration standards. Shut off and depressurize the line completely before disassembly or fitting installation. Compression fittings require proper tube squareness and deburring at the cut end to achieve a leak-free bite-ring seat — do not overtighten, as this can deform the ferrule and compromise the seal. Apply thread sealant appropriate for the service fluid to the NPTF male threads before assembly.