Parker FB6MRS4-HBLK Male Swivel Run Tee 3/8in Od 1/4in Nptf

Product Description

The PARKER FB6MRS4-HBLK is a push-to-connect male swivel run tee fitting designed for fluid and pneumatic tubing systems. It accepts 3/8 inch OD tubing on the push-to-connect ends and features a 1/4 inch NPTF male swivel thread for inline branching connections. Constructed from Kynar (PVDF), this fitting offers strong resistance to corrosive media, UV exposure, and a broad range of chemicals, making it suitable for demanding plumbing, fluid handling, and instrumentation applications. Rated to 300 psi, it is installed by plumbers, HVAC technicians, and fluid system technicians working on tubing runs that require a branch takeoff with a threaded male connection.

This fitting is used in residential and light commercial fluid distribution, pneumatic control lines, chemical feed systems, and instrumentation tubing. The swivel design allows the male NPTF thread to rotate during installation, simplifying alignment with mating female-threaded ports without twisting the connected tubing. It is a common choice where a lateral branch is needed mid-run without cutting into rigid pipe. Typical installations include water treatment equipment, RO systems, and similar plumbed assemblies where corrosion-resistant materials and push-to-connect convenience are required.

Key Features

• Push-to-connect ends accept 3/8 inch OD tubing for tool-free, quick tube insertion
• Male swivel run tee configuration allows branching off an existing tubing run
• Kynar (PVDF) construction provides excellent chemical and UV resistance
• Rated to 300 psi operating pressure
• 1/4 inch NPTF male swivel thread for secure, leak-resistant threaded connections
• Swivel feature simplifies alignment with mating ports without stressing tubing

Compatibility

Designed for use with 3/8 inch OD tubing systems using standard push-to-connect fittings and 1/4 inch NPTF female-threaded ports. Suitable for applications requiring Kynar-rated chemical-resistant fittings in push-to-connect tube assemblies.

Installation Notes

Installation is typically performed by licensed plumbers or qualified fluid system technicians. Before servicing or replacing any fitting, depressurize and drain the line completely. Ensure tubing is cut cleanly and squarely with a proper tubing cutter for a reliable push-to-connect seal. Thread the NPTF male end into the mating female port hand-tight, then snug with a wrench — do not overtighten NPTF connections, as the tapered thread seals by interference and does not require excessive torque.