Midland Industries SS1503-06-06 45-deg Swivel Elbow Adapter

Product Description

The MIDLAND INDUSTRIES SS1503-06-06 is a 45-degree swivel elbow pipe adapter machined from 316 stainless steel. It connects a 3/8-inch Male NPTF thread on one end to a 3/8-inch Female NPSM swivel on the other, allowing the swivel end to rotate freely for alignment during assembly. Rated to 7,800 psig maximum operating pressure and 1,000 degrees F, this fitting is built for demanding fluid and gas transfer applications. It is part of the SS1503 Series and is installed by licensed plumbers, pipefitters, and fluid system technicians working in industrial, marine, and high-pressure process environments.

This adapter is suited for use in high-pressure piping systems where a 45-degree directional change is required and rotational alignment of the female swivel connection simplifies final assembly. The NPTF male end forms a pressure-tight mechanical seal without relying solely on thread sealant. Applications include hydraulic lines, instrumentation tubing, fuel systems, and corrosion-resistant process piping where 316 stainless steel is specified for its resistance to chlorides and elevated temperatures. Both residential and commercial installations may call for this fitting in specialty plumbing or mechanical system work.

Key Features

• 316 stainless steel construction for corrosion resistance in harsh and chloride-rich environments
• 7,800 psig maximum operating pressure rating for high-pressure service
• 1,000 degrees F maximum operating temperature for elevated-heat applications
• Female NPSM swivel end rotates freely for easy alignment without stressing the line
• Male NPTF thread forms a pressure-tight seal at the threaded connection
• Part of the SS1503 Series male pipe to female pipe swivel 45-degree elbow lineup

Compatibility

Designed as an OEM-style replacement or new-installation fitting for high-pressure piping systems requiring a 3/8-inch Male NPTF to 3/8-inch Female NPSM swivel 45-degree elbow in 316 stainless steel.

Installation Notes

Installation is typically performed by a licensed plumber or pipefitter following applicable IPC and ASME B31 piping code requirements. Depressurize and isolate the system completely before removing any existing fittings or installing this adapter. Apply thread sealant compatible with the media and pressure rating to the NPTF male threads; do not over-torque, as stainless steel threads are susceptible to galling. Confirm the swivel end is fully seated and rotates freely before final pressurization.