Parker FB6FC4-HBLK Push-to-connect Fitting 3/8in Od

Product Description

The PARKER FB6FC4-HBLK is a push-to-connect tube fitting connector designed for fast, tool-free tube connections in fluid handling systems. Built from Kynar with an FKM O-ring, this fitting handles up to 250 psi and maintains a vacuum rating of 28 inches of mercury. The 3/8 inch OD tube connection paired with a 1/4 inch NPTF thread makes it suitable for compressed air, chemical fluid, and instrumentation lines. The black color coding provides quick visual identification on the job. Plumbers, HVAC technicians, and instrumentation installers working on low-to-medium pressure fluid systems are the primary end users.

This connector fits into applications where reliable push-to-connect performance is needed without bulky fittings or extended install time. The Kynar construction makes it appropriate for mildly aggressive fluid environments where standard thermoplastics may not hold up. Typical install scenarios include instrument air lines, chemical feed systems, and light-duty pneumatic circuits in both residential and light commercial settings. The NPTF thread form provides a dry-seal connection that reduces the need for additional thread sealant in many applications.

Key Features

• Kynar body construction for chemical resistance in fluid handling applications
• FKM O-ring compatible with a wide range of fluid media
• 250 psi maximum working pressure
• Vacuum rating of 28 inches of mercury for suction-side applications
• 1/4 inch NPTF dry-seal thread reduces reliance on additional thread sealant
• Black color for quick visual identification on multi-line installations

Compatibility

Designed as an OEM-style push-to-connect replacement fitting for systems using 3/8 inch OD tubing and 1/4 inch NPTF threaded ports in compressed air, pneumatic, or light chemical fluid service.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or instrumentation specialists. Before installing or replacing this fitting, shut off and depressurize the fluid line completely and verify the system is at zero pressure. Cut tubing squarely and remove burrs before inserting into the push-to-connect end to ensure a proper seal. Verify thread compatibility before assembly, as NPTF threads are not always interchangeable with NPT ports without inspection.