Parker 682VL-4-2 Compression Tube Connector Brass

Product Description

The PARKER 682VL-4-2 is a brass compression tube connector designed to join tubing to a male NPT threaded port in fluid and pneumatic distribution systems. It features a Vibra-Lok compression style, which creates a secure, vibration-resistant seal without soldering or special tools. Rated to 600 psi maximum working pressure, this connector is built for demanding service environments where reliable tube-to-thread connections are required. The 1/8-27 inch MPT thread size makes it a compact fitting suited for small-bore tubing runs in HVAC, refrigeration, and instrumentation piping.

This fitting is used in residential and light commercial applications where compression-to-male NPT transitions are needed. Typical install scenarios include connecting copper or compatible tubing to threaded ports on valves, manifolds, gauges, or equipment fittings. The Vibra-Lok design is well suited for installations subject to vibration, making it common in mechanical rooms, rooftop units, and equipment pads where line movement is a factor.

Key Features

• Vibra-Lok compression style provides vibration-resistant sealing without soldering
• 600 psi maximum working pressure for demanding fluid and pneumatic systems
• Brass construction offers corrosion resistance and durability in wet or humid environments
• 1/8-27 MPT thread for reliable male NPT port connections
• Compression x MNPT end connections simplify tube-to-threaded-port transitions

Compatibility

Designed as an OEM-style compression-to-male NPT connector for use in fluid handling, pneumatic, and refrigeration tubing systems where a 1/8-27 MPT thread connection is required.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or pipefitters. Shut off and depressurize the system before installing or removing any compression fitting. Use appropriate thread sealant or PTFE tape on the NPT threads per system requirements and applicable codes such as IPC or IFGC. Do not over-tighten the compression nut, as this can deform the ferrule and compromise the seal.