Merit Brass K603-48 90 Degree Pipe Elbow 3 in 316 Ss

Product Description

The MERIT BRASS K603-48 is a 90-degree threaded pipe elbow designed for directional changes in piping systems carrying fluids or gases. Constructed from 316 stainless steel, this fitting resists corrosion and performs reliably in demanding environments including chemical processing, marine, and industrial plumbing applications. It features a female NPT inlet and a male NPT outlet, with a pressure rating of 150 psi and an overall length of 6.375 inches. Licensed plumbers and pipefitters install this type of fitting where a 90-degree change in flow direction is required in a threaded pipe run.

This elbow is suited for use in commercial and industrial piping systems where 316 stainless steel is specified for its resistance to chlorides and corrosive media. Typical installations include process piping, marine plumbing, food service lines, and chemical handling systems. The FNPT x MNPT connection allows integration into standard NPT threaded pipe assemblies without welding or specialized tooling. It meets ISO standards for threaded pipe fittings and is appropriate for both new installations and replacement work in existing threaded systems.

Key Features

• 90-degree elbow configuration for directional pipe routing changes
• 316 stainless steel construction for enhanced corrosion resistance in aggressive environments
• FNPT x MNPT threaded end connections for tool-only assembly into standard NPT pipe runs
• 150 psi pressure rating suitable for low-to-medium pressure piping systems
• Meets ISO standards for threaded pipe fittings
• 3-inch fitting size with an overall length of 6.375 inches

Compatibility

Designed as an OEM-style replacement or new-installation fitting for 3-inch NPT threaded piping systems requiring a 90-degree change in direction.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable codes such as the International Plumbing Code. Shut off and depressurize the piping system completely before removing or installing any threaded fitting. Apply an appropriate thread sealant or PTFE tape to the male threads before assembly and tighten to a snug, leak-free fit using pipe wrenches. Avoid over-tightening, which can crack fittings or damage threads.