Parker 1/4 X 1/8 Ptr-s Pipe Bushing 6000 Psi Mnptf X Fnptf

Product Description

The PARKER 1/4 X 1/8 PTR-S is a straight pipe bushing designed to reduce a 1/4-inch male MNPTF thread down to a 1/8-inch female FNPTF thread in hydraulic, pneumatic, and industrial piping systems. Constructed from zinc-plated steel, it delivers a maximum working pressure rating of 6,000 psi, making it suitable for high-pressure fluid and air lines. The hex body measures 5/8 inches across flats, and the overall length is 7/8 inches. This fitting is installed by pipefitters, plumbers, and industrial maintenance technicians wherever a threaded size reduction is needed between pipe runs or equipment ports.

This bushing is commonly used in industrial plant piping, hydraulic power units, pneumatic control systems, and compressed-air distribution lines. Its straight configuration allows direct port-to-port installation without offset. The MNPTF x FNPTF thread configuration provides a pressure-sealing taper fit on both ends, reducing the need for additional sealant in properly fitted connections. It is appropriate for both new installation and maintenance replacement in industrial and commercial environments.

Key Features

• 6,000 psi maximum working pressure for high-pressure system use
• 1/4-inch male MNPTF to 1/8-inch female FNPTF straight reducing configuration
• Zinc-plated steel construction for corrosion resistance in industrial environments
• 5/8-inch hex size for standard wrench installation
• 7/8-inch overall length for compact in-line fitment
• Taper thread on both ends provides pressure-sealing engagement

Compatibility

Designed as an OEM-style replacement or new-installation fitting for industrial piping systems requiring a 1/4-inch male MNPTF to 1/8-inch female FNPTF straight reducing bushing at up to 6,000 psi.

Installation Notes

Installation should be performed by a qualified pipefitter or maintenance technician following applicable piping codes. De-pressurize and isolate the system completely before removing or installing any threaded fittings. Apply an appropriate thread sealant or PTFE tape to the male threads unless the fitting is used in a system that mandates dry assembly. Use a properly sized wrench on the hex flats and avoid over-tightening, which can crack the fitting body or distort the threads.