Parker PT-00045 Pipe Adapter 3/8 Male X 3/4 Female 4000 Psi

Product Description

The PARKER PT-00045 is a steel threaded pipe adapter designed to connect a 3/8-inch male NPT fitting (MNPTF) to a 3/4-inch female NPT fitting (FNPTF). It transitions between two different pipe thread sizes in a single fitting body, making it a standard component in hydraulic, pneumatic, and industrial plumbing assemblies. Rated to 4,000 psi, this adapter is built for demanding pressure applications. It is installed by licensed plumbers, pipefitters, and industrial maintenance technicians in systems where thread-size changes are required at connection points.

This adapter is suited for use in industrial fluid power systems, hydraulic lines, pneumatic circuits, and high-pressure water or oil plumbing where a 3/8-inch male NPT port must mate with a 3/4-inch female NPT port. Its steel construction makes it appropriate for environments with elevated pressure or exposure to oils, hydraulic fluids, and similar media. It is commonly used in both commercial and industrial settings wherever a compact, threaded reducer adapter is required at a fitting junction.

Key Features

• Reduces or adapts a 3/4-inch FNPTF port to a 3/8-inch MNPTF connection in one fitting
• Rated to 4,000 psi for use in high-pressure hydraulic and pneumatic systems
• Steel construction for durability in industrial and fluid power environments
• MNPTF x FNPTF thread configuration for standard NPT compatibility
• Sold in a package of 2 units per order

Compatibility

Designed as an OEM-style replacement or direct-fit component for industrial piping and fluid power assemblies requiring a 3/8-inch male NPT to 3/4-inch female NPT threaded adapter rated to 4,000 psi.

Installation Notes

Installation should be performed by a qualified pipefitter, plumber, or industrial maintenance technician. Depressurize and isolate the system completely before removing or installing any threaded fittings. Apply thread sealant or PTFE tape appropriate for the media and pressure rating of the system. Follow applicable codes such as the IPC or relevant industry standards for hydraulic and pneumatic piping assemblies.