Parker X3/8FHG4-B Pipe Adapter 3/8 in Mnptf X Fbspp Brass

Product Description

The PARKER X3/8FHG4-B is a brass pipe adapter designed to connect 3/8-inch male NPTF threads to 3/8-inch female BSPP threads. This fitting bridges two common thread standards — the tapered NPTF used widely in North American fluid systems and the parallel BSPP found in equipment built to British or ISO standards. Rated at 1,000 psi, it is suited for moderate-pressure hydraulic, pneumatic, and general industrial plumbing applications. The brass construction provides corrosion resistance for use with water, air, and many non-aggressive fluids. Overall length is 1-7/16 inches with a 7/8-inch hex for standard wrench engagement. Licensed plumbers, pipefitters, and industrial maintenance technicians are the typical installers.

This adapter is used in industrial and commercial plumbing systems where equipment with BSPP-threaded ports must be integrated into NPTF-threaded pipe runs. Common scenarios include connecting imported hydraulic components, compressors, or fluid power equipment to domestic piping infrastructure. Its compact 1-7/16-inch overall length makes it practical in tight panel or manifold installations. The fitting ships individually and is sold as a single unit.

Key Features

• Connects 3/8-inch MNPTF (male tapered) to 3/8-inch FBSPP (female parallel) thread standards
• 1,000 psi pressure rating suitable for moderate-pressure fluid and pneumatic service
• Brass construction resists corrosion in water, air, and mild fluid systems
• 1-7/16-inch overall length for compact installation in tight spaces
• 7/8-inch hex size allows engagement with standard open-end or combination wrenches
• Single-piece package with no minimum order requirement beyond one unit

Compatibility

Designed as a direct-fit adapter for industrial and commercial piping systems requiring a transition between 3/8-inch MNPTF and 3/8-inch FBSPP threaded connections.

Installation Notes

Installation is typically performed by a licensed plumber, pipefitter, or qualified industrial maintenance technician. Depressurize and isolate the system completely before removing or installing any threaded fittings. Apply appropriate thread sealant or PTFE tape to the NPTF male threads; BSPP parallel threads require a sealing washer or face seal to achieve a pressure-tight joint — do not rely on thread interference alone for the BSPP side. Tighten to the fitting manufacturer's recommended engagement using the 7/8-inch hex; do not overtighten brass fittings.