Parker 4-4 Dbz-b Compression Female Elbow 1/4 in Fnpt Brass

Product Description

The PARKER 4-4 DBZ-B is a brass compression tube female elbow fitting designed for use in high-pressure fluid and gas line assemblies. It connects a compression tube end to a female NPT threaded port, creating a 90-degree change in line direction without soldering or brazing. Rated to 3500 psi maximum working pressure, this fitting is built for demanding service environments where leak-free performance is critical. The all-brass construction resists corrosion and is compatible with a wide range of media. Licensed plumbers, HVAC technicians, and refrigeration mechanics commonly specify this fitting type for instrumentation, control lines, and process piping applications.

This fitting is suited for residential and commercial installations where a compression-to-FNPT transition is needed at a 90-degree angle. Typical applications include instrument tubing connections, HVAC control line assemblies, hydraulic instrument manifolds, and compressed air or gas distribution lines. The 1/4-inch thread size makes it a common choice for small-bore tubing runs in tight spaces or panel-mounted equipment where NPT-threaded ports are the standard interface.

Key Features

• Compression x FNPT end connections for tool-free tube installation on the compression side
• 3500 psi maximum working pressure for high-pressure service
• Brass construction for corrosion resistance and long service life
• 1/4-inch FPT thread standard for compatibility with standard NPT-ported components
• 90-degree female elbow geometry for in-line direction changes in confined installations
• Single-piece package quantity for exact-count procurement on service calls

Compatibility

Designed as an OEM-style compression tube female elbow for use in systems requiring a 1/4-inch FNPT port connection with a compression tube inlet. Cross-references Swagelok part number B-400-8-4 for direct replacement sourcing.

Installation Notes

Installation is performed by licensed plumbers or qualified HVAC and refrigeration technicians. Depressurize and isolate the line before removing any existing fitting. Compression fittings require only hand-snugging plus a measured turn with a wrench — do not overtighten, as over-compression can deform the ferrule and cause leaks. Thread the FNPT end into the mating port using appropriate thread sealant compatible with the line media, following applicable IPC or IFGC guidelines for the system type.