Parker FB4MRS2-HBLK Male Swivel Run Tee 1/4 in Od 1/8 in Nptf

Product Description

The PARKER FB4MRS2-HBLK is a push-to-connect male swivel run tee tube fitting designed for fluid and pneumatic line installations where a reliable, tool-free branch connection is required. Constructed from Kynar (PVDF), this fitting delivers strong chemical resistance and durability in demanding plumbing and fluid-handling applications. It accepts 1/4 inch OD tubing and threads into a 1/8 inch NPTF port, with a rated working pressure of 300 psi. The swivel feature allows the male thread end to rotate during installation, reducing stress on the tubing and simplifying alignment in tight spaces. Licensed plumbers, HVAC technicians, and industrial service pros regularly use fittings of this type in refrigeration, chemical transfer, and instrumentation lines.

This fitting is suited for residential and light commercial fluid or pneumatic systems where Kynar-compatible media and moderate-pressure connections are required. The run tee configuration allows a straight-through flow path along the tube run with a perpendicular male threaded branch outlet, making it useful in distribution manifolds, instrument panels, and process lines. It is a direct-connect design that eliminates the need for ferrules or compression sleeves at the tubing interface.

Key Features

• Push-to-connect design accepts 1/4 inch OD tubing without tools or ferrules
• 1/8 inch NPTF male swivel thread for leak-resistant tapered pipe connections
• Kynar (PVDF) construction for chemical resistance and durability
• 300 psi working pressure rating
• Swivel male thread end simplifies alignment and reduces installation torque on tubing
• Run tee configuration supports straight-through flow with a perpendicular branch outlet

Compatibility

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

Installation Notes

Installation should be performed by a licensed plumber, HVAC technician, or qualified mechanical contractor familiar with push-to-connect fittings and NPTF thread engagement. Shut off system pressure and depressurize the line completely before disconnecting or installing any fitting. Ensure tubing ends are cut square and deburred before insertion to achieve a proper seal. Follow applicable IPC and local plumbing code requirements for fitting material compatibility with the system fluid.