Parker 4-4 Fbz-ss Compression Tube Connector 1/4 in Ss

Product Description

The PARKER 4-4 FBZ-SS is a compression tube connector designed to create a leak-tight mechanical joint between a compression tube end and a male NPT threaded port. Constructed from stainless steel, it is built for systems where corrosion resistance and pressure integrity are critical. The connector handles a maximum working pressure of 10,300 psi and features a 1/4 inch thread size with an MPT thread standard. At 1.49 inches overall length, it is a compact, single-piece fitting suited for instrumentation, hydraulic, and process piping applications where a reliable tube-to-pipe transition is required. Licensed plumbers, pipefitters, and instrumentation technicians are the primary installers of this fitting.

This fitting is used in high-pressure fluid and gas systems across industrial, commercial, and process environments. The compression-by-male-NPT configuration makes it a standard choice when transitioning from tubing runs to threaded pipe or valve ports. Common applications include instrument tubing connections, hydraulic lines, pneumatic systems, and process control plumbing where stainless steel construction is specified for resistance to corrosive media or elevated-temperature service.

Key Features

• Stainless steel construction for corrosion resistance in demanding service environments
• Maximum working pressure of 10,300 psi suits high-pressure instrumentation and hydraulic applications
• Compression x MNPT end connections provide a reliable tube-to-threaded-port transition
• 1/4 inch thread size with MPT thread standard for broad compatibility with standard fittings
• Compact overall length of 1.49 inches for installations with limited clearance

Compatibility

Designed as an OEM-style replacement or new-installation compression connector for high-pressure tubing systems using 1/4 inch male NPT threaded ports and compatible compression tube ends.

Installation Notes

Installation should be performed by a qualified pipefitter, plumber, or instrumentation technician in accordance with applicable IPC and ASME B31 piping codes. Depressurize and isolate the system completely before disassembling any existing fittings or installing this connector. Ensure tube ends are cut cleanly and squarely, and that ferrules are seated properly before tightening the compression nut. Do not over-torque the compression nut, as stainless steel fittings can gall if excessive force is applied without proper technique.