Parker 68VL-5-4 Compression Tube Connector Brass 500 Psi

Product Description

The PARKER 68VL-5-4 is a brass compression tube connector designed to join tubing to male NPT threaded ports in fluid and pneumatic systems. It uses Parker's Vibra-Lok compression style, which provides a reliable, vibration-resistant seal without brazing or soldering. The fitting connects a compression end to a 1/4-18 MNPT thread, rated for a maximum working pressure of 500 psi. Operating temperature range runs from -30 degrees F to 275 degrees F (135 degrees C). Brass construction makes it suited for a wide range of media including air, water, and hydraulic fluids. Licensed plumbers, HVAC technicians, and fluid power mechanics install this type of fitting in both residential and light commercial applications.

This connector is used wherever tubing must terminate at a threaded port in refrigeration lines, pneumatic control circuits, hydraulic manifolds, or compressed air distribution systems. The Vibra-Lok compression style eliminates the need for flare tools or soldering, making it well suited for field installations or retrofit work. It meets ISO 6149 and SAE J1926 standards, confirming its dimensional and performance compliance for use in professional trade applications.

Key Features

• Vibra-Lok compression design provides vibration-resistant seal without brazing or soldering
• Brass body construction compatible with air, water, and common hydraulic fluids
• 1/4-18 MNPT thread end for direct connection to standard male NPT ports
• Rated to 500 psi maximum working pressure
• Meets ISO 6149 and SAE J1926 standards
• Wide operating range: -30 degrees F to 275 degrees F

Compatibility

Designed as an OEM-style replacement or new-install compression connector for systems using 1/4-18 MNPT ported components in HVAC, pneumatic, hydraulic, and fluid distribution applications.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or fluid power mechanics. Shut off system pressure and depressurize the line before disassembly or installation. The Vibra-Lok compression end requires correct tube insertion depth and nut torque per Parker's fitting instructions — do not overtighten, as this can deform the ferrule and compromise the seal. Verify thread engagement and check for leaks at rated pressure before returning the system to service.