Parker VS68AB-8-4 Compression Tube Connector Brass

Product Description

The PARKER VS68AB-8-4 is a brass compression tube connector designed to join 1/2 inch OD tubing to a 1/4-18 NPTF male threaded port. It provides a leak-resistant mechanical seal using compression-style end connections, making it a reliable choice for fluid and pneumatic line assemblies. Rated to 400 psi maximum working pressure and capable of handling temperatures from -65 degrees F to 250 degrees F, this fitting meets D.O.T. FMVSS571.106 and SAE J246 standards. Licensed plumbers, HVAC technicians, and fleet maintenance professionals rely on fittings like this for brake line, refrigerant, and pneumatic system work.

This connector is suited for residential, commercial, and mobile equipment applications where a compression tube end must terminate at a male NPT threaded port. Typical installations include air brake systems, fuel lines, and HVAC refrigerant or pneumatic control lines. The NPTF thread standard ensures a pressure-tight fit without requiring additional sealant when properly assembled. Its compact brass construction makes it practical in tight equipment bays and panel installations.

Key Features

• Brass construction for corrosion resistance in fluid and pneumatic systems
• Compression x MNPT end connections for tool-accessible, reliable sealing
• Rated to 400 psi maximum working pressure
• Operating temperature range of -65 degrees F to 250 degrees F
• Meets D.O.T. FMVSS571.106 and SAE J246 standards
• NPTF thread standard for pressure-tight connections

Compatibility

Designed for use with 1/2 inch OD tubing and 1/4-18 NPTF male threaded ports in fluid and pneumatic line assemblies meeting D.O.T. and SAE J246 requirements.

Installation Notes

Installation should be performed by a licensed plumber, HVAC technician, or qualified mechanic familiar with compression fittings and NPT threaded connections. Depressurize and isolate the line fully before disassembly or installation. Do not overtighten the compression nut, as this can deform the ferrule and compromise the seal. Verify thread compatibility and torque to tool-tight plus the appropriate turns per applicable system standards before returning the line to service.