Parker PT-00042 Pipe Adapter 3/8 Male X 1/2 Female 5000 Psi

Product Description

The PARKER PT-00042 is a straight steel pipe adapter designed to connect a 3/8 inch male NPT fitting (MNPTF) to a 1/2 inch female NPT fitting (FNPTF). It provides a reliable threaded transition between two different pipe sizes in high-pressure hydraulic, pneumatic, or fluid transfer systems. Rated to a maximum working pressure of 5,000 psi, this adapter is built for demanding industrial applications where thread integrity and pressure retention are critical. Licensed plumbers, pipefitters, and hydraulic system technicians install this type of fitting during system assembly, repair, or line modification work.

This adapter is suited for industrial piping systems requiring a size transition from 3/8 inch to 1/2 inch threaded connections. Its straight configuration makes it appropriate for inline installations where space permits a direct thread-to-thread connection. It is commonly used in hydraulic power units, pneumatic distribution lines, compressed air systems, and fluid control panels operating at or below 5,000 psi. The MNPTF x FNPTF connection type follows standard NPT tapered thread specifications, making it compatible with standard threaded pipe and fittings across a wide range of fluid system builds.

Key Features

• 5,000 psi maximum working pressure rating for high-pressure fluid system use
• 3/8 inch MNPTF male thread transitions to 1/2 inch FNPTF female thread
• Straight fitting shape for direct inline installation
• Steel construction provides durability in industrial environments
• Standard NPT tapered thread form ensures broad system compatibility

Compatibility

Designed as an OEM-style straight pipe adapter for industrial hydraulic, pneumatic, and fluid transfer systems using standard MNPTF x FNPTF threaded connections rated up to 5,000 psi.

Installation Notes

Installation should be performed by a licensed plumber, pipefitter, or qualified hydraulic technician following applicable codes such as the IPC or relevant industry standards. De-pressurize and isolate the system completely before removing or installing any threaded fittings. Apply appropriate thread sealant or PTFE tape to the male threads per system fluid compatibility requirements. Do not over-torque tapered NPT threads, as this can cause thread damage or fitting failure.