Parker 68VL-8-6 Compression X Mnpt Brass Tube Connector

Product Description

The PARKER 68VL-8-6 is a brass compression tube connector designed to join tubing to a male NPT threaded port in hydraulic, pneumatic, and fluid-transfer systems. It features a 3/8-18 thread size with a Compression x MNPT end connection configuration, using Parker's Vibra-Lok compression style for a secure, vibration-resistant seal. Rated to a maximum working pressure of 250 psi, this connector handles temperatures from -30 degrees F up to 275 degrees F. It meets ISO 6149 and SAE J1926 standards. Plumbers, HVAC technicians, and fluid-system installers specify this fitting where a reliable compression-to-male-thread transition is required.

The 68VL-8-6 is suited for residential and light commercial applications involving tubing runs that terminate at NPT-ported equipment or manifolds. Typical install scenarios include refrigeration lines, hydraulic control circuits, compressed air distribution, and plumbing supply systems where vibration is a concern. The Vibra-Lok compression design eliminates the need for flare tooling and provides a positive bite on the tube OD without soldering or brazing, making it a practical choice for field service and retrofit work.

Key Features

• Vibra-Lok compression style provides vibration-resistant tube retention without flaring or brazing
• Brass construction for corrosion resistance in air, water, and compatible fluid service
• 3/8-18 thread size with Compression x MNPT end connections for direct port installation
• 250 psi maximum working pressure rating
• Operating temperature range of -30 degrees F to 275 degrees F
• Meets ISO 6149 and SAE J1926 standards

Compatibility

Designed as an OEM-style compression fitting for fluid-transfer, pneumatic, and hydraulic systems requiring a 3/8-18 Compression x MNPT transition connection.

Installation Notes

Installation should be performed by a qualified technician familiar with compression fittings and NPT thread assembly. Depressurize and isolate the line before disassembly or installation. Apply thread sealant to the MNPT threads per the system manufacturer's recommendation, and ensure the tube end is cut square and free of burrs before seating in the compression fitting. Follow applicable codes such as ASME B31 piping standards or system-specific requirements for pressure ratings and inspection.