Parker VS68AB-6-4 Compression Tube Connector Brass 400 Psi

Product Description

The PARKER VS68AB-6-4 is a brass compression tube connector designed to join compression tubing to a male NPT threaded port in fluid and pneumatic line systems. It features a 1/4-18 NPTF thread and handles working pressures up to 400 psi across a temperature range of -65 degrees F to 250 degrees F. The inside diameter measures 0.314 inches. This fitting meets D.O.T. FMVSS571.106 and SAE J246 standards, making it suitable for applications where regulatory compliance is required. Licensed plumbers, HVAC technicians, and fluid systems mechanics are the typical installers.

This connector is used in residential and commercial settings wherever a compression tube line must terminate at or transition to a male NPT threaded fitting. Common applications include refrigeration lines, pneumatic control circuits, brake and fuel line assemblies, and hydraulic auxiliary circuits. Its brass construction offers good corrosion resistance in both air and fluid service environments. The Compression x MNPT end configuration allows a direct, tool-secured connection without soldering or flaring.

Key Features

• Brass construction for corrosion resistance in fluid and pneumatic service
• 1/4-18 NPTF thread for a pressure-tight mechanical seal
• Compression x MNPT end connections for tool-secured, no-solder assembly
• Rated to 400 psi maximum working pressure
• Wide service temperature range: -65 degrees F to 250 degrees F
• Meets D.O.T. FMVSS571.106 and SAE J246 standards

Compatibility

Designed as an OEM-style replacement or new-installation compression tube connector suitable for systems using 1/4-18 NPTF male NPT ports in fluid, pneumatic, and brake line applications.

Installation Notes

Installation should be performed by a licensed plumber, HVAC technician, or qualified fluid systems mechanic. De-pressurize and isolate the line completely before disassembling any fittings. Hand-tighten the compression nut first, then use an appropriate wrench to achieve a secure, leak-free connection. Verify compliance with applicable codes such as IFGC, IPC, or FMVSS regulations for the specific application before returning the system to service.