Parker 68VL-6-4 Compression X Mnpt Tube Connector Brass

Product Description

The PARKER 68VL-6-4 is a brass compression tube connector designed to join tubing to male NPT threaded ports in fluid and pneumatic systems. Featuring Parker's Vibra-Lok compression style, this fitting creates a secure, vibration-resistant seal without the need for additional sealants on the compression side. It is rated to 400 psi maximum working pressure and handles temperatures from -30 degrees F to 275 degrees F, making it suitable for a wide range of industrial, HVAC, and plumbing applications. Licensed plumbers, pipefitters, and mechanical contractors are the typical installers of this type of fitting.

This connector is used in applications where copper or compatible tubing must transition to a male NPT threaded port. Typical use cases include refrigerant piping, compressed air lines, hydraulic instrument tubing, and general fluid transfer systems in both commercial and industrial settings. The Compression x MNPT end configuration allows a straight in-line connection with a 1/4-18 NPT thread on the male end. It meets ISO 6149 and SAE J1926 standards, making it appropriate for systems requiring certified fitting compliance.

Key Features

• Vibra-Lok compression style provides a vibration-resistant, tool-assisted seal
• 400 psi maximum working pressure rated
• Brass construction offers corrosion resistance in a range of fluid media
• 1/4-18 NPT male thread on one end with compression fitting on the other
• Meets ISO 6149 and SAE J1926 standards
• Operating range of -30 degrees F to 275 degrees F

Compatibility

Designed as an OEM-style compression-to-MNPT fitting for use in fluid, pneumatic, and instrumentation piping systems requiring a 1/4-18 NPT threaded port connection with a compression tube inlet.

Installation Notes

Installation should be performed by a licensed plumber, pipefitter, or qualified mechanical technician. Always depressurize and isolate the system before removing or installing compression fittings. The compression nut should be tightened with a wrench to manufacturer-recommended engagement — do not rely on hand-tight alone. Follow applicable codes including ASME B31.1 or B31.3 for pressure piping systems as relevant to the installation.