Merit Brass 3612D-1606 Pipe Reducer 1x3/8 Inch Fnpt 3000 Psi

Product Description

The MERIT BRASS 3612D-1606 is a threaded pipe reducer fitting manufactured from 316/316L stainless steel. It transitions a 1-inch female NPT connection down to a 3/8-inch female NPT connection, making it a standard reducing coupling used in process piping, plumbing, and industrial fluid systems. Rated to 3,000 psi, this fitting handles high-pressure service in demanding environments. At 2-23/64 inches in length and 1.25 pounds, it is a compact, heavy-duty component. Licensed plumbers, pipefitters, and industrial maintenance technicians are the typical installers.

This reducer is suited for residential and commercial applications where a pipe run must step down from 1-inch to 3/8-inch line size. Common use cases include high-pressure water lines, hydraulic supply piping, chemical process lines, and steam or condensate systems where corrosion resistance is critical. The 316/316L dual-grade material certification makes it appropriate for marine, food-service, and chemical environments where standard steel would corrode.

Key Features

• 316/316L stainless steel construction for corrosion resistance in harsh or wet environments
• 3,000 psi pressure rating for high-pressure pipe systems
• FNPT x FNPT threaded end connections for tool-only installation without welding
• 1-inch to 3/8-inch reducing configuration for common pipe step-down transitions
• 2-23/64 inch body length fits standard close-quarter piping arrangements

Compatibility

Designed as an OEM-style threaded pipe reducer for 1-inch to 3/8-inch FNPT piping systems rated to 3,000 psi in high-pressure plumbing and industrial process applications.

Installation Notes

Installation should be performed by a licensed plumber or certified pipefitter in accordance with applicable IPC or IFGC code requirements for the system type. Depressurize and isolate the line completely before removing or installing any threaded fitting. Apply an appropriate thread sealant or PTFE tape to male threads before assembly, and tighten to a wrench-tight fit using a pipe wrench. Do not over-tighten stainless steel fittings, as galling of the threads can occur.