Value Collection 4RSB3/4X1/8 Ss Reducer Coupling Npt

Product Description

The VALUE COLLECTION 4RSB3/4X1/8 is a stainless steel reducer coupling designed to connect two NPT-threaded pipes of different diameters in a single inline fitting. Reducer couplings allow technicians to transition between pipe sizes without adding extra fittings or offsets, keeping runs compact and leak-prone joint count low. Stainless steel construction resists corrosion in wet, chemical-exposure, and outdoor environments. This fitting is sized for common small-bore piping work and is sold individually, making it straightforward to order the exact quantity needed for a job. Plumbers, pipefitters, and HVAC installers working with threaded pipe systems will find this coupling a direct, reliable component for pipe-size transition tasks.

This reducer coupling suits residential and light commercial plumbing, HVAC condensate and refrigerant piping, compressed air lines, and general fluid-handling systems where NPT-threaded stainless steel fittings are specified. It is appropriate for applications requiring corrosion resistance beyond what standard carbon steel or brass fittings provide, such as coastal installations, chemical-adjacent environments, or potable water systems where stainless is preferred. The NPT end connection is the standard tapered thread used throughout North American plumbing and mechanical systems, ensuring broad fitment across common pipe assemblies.

Key Features

• Stainless steel construction provides corrosion resistance in wet and chemically aggressive environments
• NPT threaded ends conform to standard North American tapered pipe thread specifications
• Reducer coupling design transitions between two different pipe diameters in a single fitting
• Compact profile helps minimize space requirements in tight pipe runs
• Sold as a single unit for precise quantity ordering

Compatibility

Designed as an OEM-style replacement or new-installation fitting for NPT-threaded stainless steel pipe systems requiring an inline reducer coupling.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter following applicable IPC or IFGC code requirements for the specific system type. Apply an appropriate thread sealant or PTFE tape to the NPT threads before assembly and tighten to hand-tight plus wrench turns as appropriate for the pipe material — do not overtighten stainless threads, as galling can occur. Depressurize and drain the affected line fully before removing any existing fitting or installing this coupling. Verify the system pressure and fluid compatibility fall within the fitting material ratings before returning the line to service.