Parker 68VL-6-6 Compression Tube Connector 3/8-18 Mnpt

Product Description

The PARKER 68VL-6-6 is a brass compression tube connector designed to join compression tubing to a male NPT threaded port. It uses Parker's Vibra-Lok compression style, which provides a secure, vibration-resistant seal without requiring flare preparation or soldering. The fitting is rated for a maximum working pressure of 400 psi and handles temperatures from -30 degrees F to 275 degrees F. It is built to ISO 6149 and SAE J1926 standards. HVAC technicians, plumbers, and fluid-systems installers use this type of fitting where a reliable compression-to-male-NPT transition is needed in hydraulic, pneumatic, or fluid-handling lines.

This fitting is suited for residential and light commercial applications involving tubing runs that connect to NPT-ported equipment, valves, or manifolds. The Compression x MNPT end configuration makes it a direct transition fitting, eliminating the need for an additional adapter. It is appropriate for use in systems where vibration resistance is a concern, such as compressor lines, equipment panels, and rooftop mechanical assemblies.

Key Features

• Vibra-Lok compression style for vibration-resistant, no-flare tube connections
• Brass construction for corrosion resistance and durability in fluid-handling applications
• 400 psi maximum working pressure rating
• Operating temperature range of -30 degrees F to 275 degrees F
• Meets ISO 6149 and SAE J1926 standards
• Compression x MNPT end connections for direct tube-to-port transition

Compatibility

Designed as an OEM-style compression tube connector for hydraulic, pneumatic, and fluid-handling systems requiring a 3/8-18 inch male NPT port connection with a Vibra-Lok compression inlet.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or fluid-systems mechanics. Shut off and depressurize the system completely before removing or installing any compression fittings. Ensure tubing is cut square and fully seated into the fitting body before tightening the compression nut. Do not overtighten — follow the fitting manufacturer's recommended turns-past-finger-tight procedure for compression fittings of this style.