Parker 8FSC4N-316 Compression Tube Connector 1/4-18 Npt

Product Description

The PARKER 8FSC4N-316 is a stainless steel compression tube connector designed to join tubing to a female NPT threaded port. It features a compression end on one side and a female NPT (FNPT) end on the other, making it a reliable choice for instrumentation, fluid control, and process piping applications where a leak-tight mechanical connection is required. Rated to 6300 psi maximum working pressure and capable of handling temperatures from -425 degrees F to 1200 degrees F, this fitting is built for demanding service conditions. It is typically installed by licensed plumbers, pipefitters, or instrumentation technicians.

This connector is suited for residential and commercial applications involving gas, hydraulic, or process fluid lines where a compression-to-NPT transition is needed. Its 316 stainless steel construction makes it appropriate for corrosive environments, high-pressure systems, and lines carrying aggressive media. The 1/4-18 NPT thread size is a standard trade dimension found across a wide range of valves, gauges, and instrument fittings.

Key Features

• 316 stainless steel construction for corrosion resistance in harsh service environments
• Rated to 6300 psi maximum working pressure
• Wide temperature range: -425 degrees F to 1200 degrees F
• Compression x FNPT end connections for tube-to-threaded-port transitions
• 1/4-18 NPT thread standard for broad compatibility with instrumentation fittings
• Single-piece package quantity suitable for individual replacement or new installation

Compatibility

Designed as an OEM-style replacement or new-installation fitting for compression tube-to-FNPT connections in high-pressure instrumentation, process piping, and fluid control systems using 1/4-18 NPT threaded ports.

Installation Notes

Installation is typically performed by a licensed pipefitter, plumber, or instrumentation technician. Shut down and depressurize the system fully before removing or installing any compression fitting. Apply thread sealant appropriate for the media and pressure rating to the NPT threads per IPC or IFGC guidelines. Do not over-tighten the compression nut, as stainless ferrules require a precise number of turns from finger-tight to achieve a proper seal without damaging the tubing.