Parker 67PLP-4M-6M Reducer Straight Tube Fitting 300 Psi

Product Description

The PARKER 67PLP-4M-6M is a push-to-connect tube-to-stem reducer fitting in a straight configuration, designed for use in pneumatic and fluid control systems. Constructed from nickel-plated brass with a silicone-free grease lubricant, it connects a 4 mm outside diameter tube to a stem port and holds a maximum working pressure of 300 psi. The silver body with yellow release button allows for tool-free tube insertion and quick disconnection during service. Licensed HVAC and refrigeration technicians, plumbers, and industrial mechanics install this fitting in tubing assemblies where a size transition is required in a straight-line run.

This fitting is suited for light commercial and residential pneumatic control lines, instrument air tubing, and similar low-to-medium pressure fluid or gas applications. The push-to-connect design speeds up installation in tight spaces where wrenching threaded fittings is impractical. It is rated for a temperature range of 0 degrees F to 200 degrees F, making it compatible with a wide range of HVAC control, refrigeration sensing, and building automation tubing circuits. The UL94 V-0 flame resistance rating meets fire safety requirements common to commercial equipment enclosures.

Key Features

• Push-to-connect design allows tool-free tube insertion and one-hand release via yellow button
• Nickel-plated brass construction resists corrosion in humid mechanical room environments
• Rated to 300 psi maximum working pressure
• Operating temperature range of 0 degrees F to 200 degrees F
• UL94 V-0 flame resistance rating meets commercial enclosure fire standards
• Silicone-free grease — safe for use in systems sensitive to silicone contamination

Compatibility

Designed as an OEM-style push-to-connect reducer fitting for pneumatic tubing systems using 4 mm outside diameter tubing connected to a stem port in straight-line configurations.

Installation Notes

Installation is typically performed by licensed HVAC technicians, refrigeration mechanics, or instrumentation technicians. Depressurize and isolate the tubing circuit fully before removing or inserting the fitting. Ensure the tube end is cut cleanly and squarely — a ragged cut can compromise the internal collet seal and result in leaks under pressure. Verify tube outside diameter matches the fitting specification before installation.