Parker 4-4 Fbz-b 1/4 in Compression X Mnpt Brass Connector

Product Description

The PARKER 4-4 FBZ-B is a straight brass compression tube connector with a 1/4 inch thread size and Compression x MNPT end connections. It is designed to join tubing to a male pipe thread port in fluid and gas handling systems where a leak-free, vibration-resistant mechanical connection is required. Manufactured from brass to ASTM-B-453 and ASTM-B16 standards, this fitting is rated for working pressures up to 3500 psi. Licensed plumbers, HVAC technicians, and refrigeration mechanics install this type of fitting in instrument tubing, fuel line, and control system applications.

This connector is suited for residential and light commercial installations where 1/4 inch compression tubing must terminate at a male pipe thread port. Typical applications include refrigerant line accessories, fuel gas pilot supply lines, pneumatic control circuits, and hydraulic instrument tubing runs. Its straight profile simplifies in-line connections in confined equipment spaces.

Key Features

• Compression x MNPT end connections for tool-free tubing termination at male pipe thread ports
• Brass construction per ASTM-B-453 and ASTM-B16 for corrosion resistance and pressure integrity
• Rated to 3500 psi maximum working pressure
• 1/4 inch thread size in a straight fitting shape for direct in-line installation
• Overall length of 1.49 inches for compact installations

Compatibility

Designed as an OEM-style replacement or new-installation compression fitting for systems using 1/4 inch compression tubing and male NPT pipe thread ports. Cross-referenced to Swagelok part number B-400-1-4.

Installation Notes

This fitting is typically installed by licensed plumbers or HVAC and refrigeration technicians. Shut off and depressurize the system and purge any residual fluid or gas before removing or installing compression fittings. Follow applicable code requirements under the IPC, IFGC, or NEC as dictated by the system type. Do not overtighten the compression nut; follow the fitting manufacturer's recommended turn-past-finger-tight procedure for the tubing material in use.