Parker 3/8 Mms-s Male Branch Tee 3/8 Inch Mnptf Fnptf

Product Description

The PARKER 3/8 MMS-S is a male branch tee fitting designed for industrial pipe assemblies requiring reliable threaded connections at high working pressures. Constructed from zinc-plated steel, this tee accepts 3/8-inch male NPTF threads on the branch port and 3/8-inch female NPTF threads on the run ports, following the MNPTF x FNPTF connection configuration. It carries a maximum working pressure rating of 4,500 psi, making it appropriate for demanding hydraulic and pneumatic line work. Licensed plumbers, pipefitters, and industrial maintenance technicians use this fitting to route branch lines from a main fluid circuit without adding unnecessary bulk to the assembly.

This fitting is suited for industrial fluid systems operating under elevated pressure, including hydraulic circuits, compressed air lines, and general-purpose pipe assemblies. Its NPTF thread standard provides a pressure-tight mechanical seal without relying solely on a sealant compound. The tee configuration allows a single inlet line to split into two directions or introduces a branch takeoff on a straight run. Typical installation scenarios include machine tool plumbing, hydraulic power units, and plant utility piping where compact, threaded connections are preferred.

Key Features

• 4,500 psi maximum working pressure for high-demand industrial applications
• Zinc-plated steel construction provides corrosion resistance in typical shop and plant environments
• NPTF thread standard delivers a dry-seal, pressure-tight connection on both male and female ports
• 3/8-inch male branch and 3/8-inch female run ports in a tee configuration for clean branch routing
• Meets SAE 140425 standards for industrial pipe fittings
• Sold as a single unit with no minimum order multiplier above one

Compatibility

Designed as an OEM-style replacement or direct-fit addition for industrial pipe systems using 3/8-inch NPTF threaded connections rated for high-pressure service.

Installation Notes

Installation should be performed by a qualified pipefitter or licensed plumber following applicable codes. Depressurize and isolate the line completely before removing any existing fitting or installing this tee. NPTF threads are designed to seal on thread interference, but a thread sealant compatible with the system fluid is commonly applied for additional security. Do not over-torque the fitting, as this can compromise the thread seal or crack the fitting body.