Parker FB4MC4-HBLK Push-to-connect Fitting 1/4 in

Product Description

The PARKER FB4MC4-HBLK is a push-to-connect tube-to-pipe connector fitting designed for fast, tool-free tube connections in fluid and pneumatic systems. Constructed from Kynar (PVDF) with an FKM O-ring, this fitting handles pressures up to 250 psi and a vacuum rating of 28 in-Hg. It accepts 1/4-inch OD tubing and threads into a 1/4-inch NPTF port. The black color coding aids quick visual identification during installation and service. Licensed plumbers, HVAC technicians, and fluid system installers working on chemical-resistant or high-purity fluid lines will find this fitting suited to demanding service conditions.

This connector is used in residential and commercial applications where push-to-connect fittings interface with threaded pipe ports. Typical installations include water treatment systems, chemical fluid lines, pneumatic control circuits, and HVAC condensate or refrigerant-adjacent plumbing where chemical resistance and reliable sealing matter. The NPTF thread form provides a pressure-tight mechanical seal without requiring additional sealant tape on properly machined ports, though installer judgment on thread sealant use should follow applicable codes and system requirements.

Key Features

• Kynar (PVDF) body construction for excellent chemical resistance and durability
• FKM O-ring sealing material suitable for aggressive fluid compatibility
• Push-to-connect design allows tool-free tube insertion and secure retention
• Rated to 250 psi working pressure
• Vacuum-rated to 28 in-Hg for low-pressure and vacuum service
• 1/4-inch NPTF male thread for pressure-tight port connections

Compatibility

Designed for use with 1/4-inch OD tubing and 1/4-inch NPTF threaded ports in fluid, pneumatic, and process piping systems where Kynar fittings are specified.

Installation Notes

Installation should be performed by a licensed plumber or qualified fluid systems technician familiar with push-to-connect fittings and NPTF threaded connections. Depressurize and isolate the system fully before removing or installing any fittings. Confirm tubing OD and cut squarely for a proper push-to-connect seal. Follow applicable local plumbing codes and system design specifications when selecting thread sealant or tape for NPTF connections.