Parker VS271AB-6-6 Compression Male Run Tee 3/8-18

Product Description

The PARKER VS271AB-6-6 is a brass compression tube male run tee designed for use in pneumatic and fluid transfer lines where a branch connection must be made without interrupting the main run. The fitting connects via compression ends on both run ports and a male NPTF threaded branch port, providing a secure, leak-resistant joint without the need for solder or flare tools. It is rated to 400 psi maximum working pressure and handles temperatures from -65 degrees F to 250 degrees F. Licensed HVAC technicians, plumbers, and fleet service professionals install this type of fitting in refrigerant, air brake, and hydraulic tubing assemblies.

This fitting is suited for both light commercial and mobile equipment applications where DOT-compliant tube connections are required. The 3/8-18 NPTF thread on the branch port seals on thread interference rather than relying solely on a sealant, making it appropriate for high-vibration environments. The compression-by-MNPT-by-compression end configuration allows inline branch connections to existing tubing runs without cutting additional segments or reworking fittings upstream and downstream.

Key Features

• 400 psi maximum working pressure for reliable performance in pressurized fluid and pneumatic systems
• Brass construction resists corrosion in air, water, and compatible fluid service
• Compression x MNPT x Compression end configuration enables inline branch tee without flaring or soldering
• 3/8-18 NPTF thread standard provides pressure-tight thread engagement
• Wide temperature range of -65 degrees F to 250 degrees F suits refrigeration and mobile equipment environments
• Meets DOT FMVSS571.106 and SAE J246 standards for air brake and automotive tubing system use

Compatibility

Designed as an OEM-style replacement or service fitting for compression tube systems using 3/8-18 NPTF male branch connections in DOT-compliant pneumatic, refrigeration, or fluid transfer assemblies.

Installation Notes

Installation is performed by licensed plumbers, HVAC technicians, or qualified fleet mechanics. Depressurize and isolate the line completely before disassembling any fittings. Compression fittings require proper tube preparation including a clean, square cut and debris-free tubing ends to achieve a reliable seal. Do not overtighten the compression nut; follow the fitting manufacturer's recommended turns-past-finger-tight procedure and verify for leaks at operating pressure before returning the system to service.