Parker 1 1/4 X 3/4 Ptr-s Pipe Bushing 3000 Psi Mnptf X Fnptf

Product Description

The PARKER 1 1/4 X 3/4 PTR-S is a straight pipe bushing designed to reduce a 1-1/4 inch male MNPTF thread down to a 3/4 inch female FNPTF thread in a single fitting. Rated to 3,000 psi maximum working pressure, this bushing is built for demanding industrial piping systems where reliable pressure containment is critical. The hex drive measures 1-3/4 inches across, allowing standard wrench engagement for installation and removal. Licensed plumbers, pipefitters, and industrial maintenance technicians install this type of fitting in hydraulic, pneumatic, and fluid transfer assemblies.

This bushing is suited for industrial and commercial piping installations where a threaded size reduction is required inline. Typical applications include hydraulic power units, compressed air distribution headers, oil and coolant lines, and general process piping. The MNPTF x FNPTF connection type provides a pressure-tight tapered thread seal without the need for a separate thread adapter. It is appropriate for both new construction and retrofit work wherever a 1-1/4 inch to 3/4 inch NPT reduction is called for.

Key Features

• Reduces 1-1/4 inch male MNPTF to 3/4 inch female FNPTF in a straight configuration
• 3,000 psi maximum working pressure rating for high-pressure service
• 1-3/4 inch hex size accommodates standard open-end or adjustable wrenches
• Tapered NPT threads form a pressure-tight mechanical seal
• Compact straight body fits tight piping layouts without offset

Compatibility

Designed as an OEM-style replacement or new-installation fitting for industrial piping systems requiring a 1-1/4 inch male MNPTF to 3/4 inch female FNPTF threaded reduction at up to 3,000 psi working pressure.

Installation Notes

Installation is performed by licensed plumbers or pipefitters following applicable IPC and IFGC thread-engagement standards for tapered NPT connections. Depressurize and isolate the system before removing or installing any threaded fitting. Apply an appropriate thread sealant or PTFE tape to the male threads before assembly. Do not over-torque; hand-tighten first, then wrench-tighten to achieve a leak-free seal without stressing the fitting body.