1 inch x 3-1/2 inch Stainless Steel Nipple

1" x 3-1/2" Stainless Steel Pipe Nipple – Schedule 40, Threaded Fitting

The 1" x 3-1/2" Stainless Steel Pipe Nipple is a Schedule 40 fitting used for extending pipe runs or connecting system components in water, air, steam, or process fluid applications. Manufactured from corrosion-resistant stainless steel (commonly 304 or 316), this nipple is suitable for high-strength and chemically aggressive environments, both indoors and outdoors.

Product Specifications

• Nominal Size: 1" NPT
• Length: 3-1/2"
• Material: Stainless Steel (typically ASTM A312 TP304 or TP316)
• Wall Thickness: Schedule 40 per ASME B36.10M
• Connection: Male NPT x Male NPT (tapered thread per ANSI/ASME B1.20.1)
• Service Rating: Pressure rating dependent on system design and pipe schedule; suitable for moderate to high-pressure service
• Compliance: Meets ASTM A733 for pipe nipples and threaded end specifications

Performance Characteristics

• ✅ Corrosion Resistance – Stainless steel offers superior protection against oxidation, scaling, and chemical attack
• ✅ Dimensional Accuracy – Threaded ends are precision-machined for secure and consistent joint engagement
• ✅ High Temperature and Pressure Tolerance – Suitable for use in heating systems, process piping, and compressed air lines

Installation Guidelines

Install using PTFE thread sealant or compatible pipe joint compound to ensure a leak-resistant seal. Apply torque using a pipe wrench positioned on the body of the nipple—do not over-tighten, as excessive torque may damage mating threads. Follow applicable mechanical code requirements and project specifications for material compatibility and thread engagement depth.

Application Scope

This fitting is used in a range of mechanical and plumbing systems including boiler connections, pump manifolds, distribution headers, compressed air networks, and industrial fluid transfer lines. It is also commonly installed in environments requiring metal-to-metal joints with increased resistance to environmental degradation.

Material Insight

Stainless steel nipples provide a long service life in corrosive conditions. Type 304 is suitable for general-purpose use, while Type 316 is preferred in marine or chloride-heavy environments. Both alloys are fully recyclable and meet sustainability criteria for green building initiatives.

The 1" x 3-1/2" Stainless Steel Nipple delivers strength, chemical resistance, and dimensional integrity for contractors working on demanding piping applications. It is manufactured in compliance with industry specifications for consistent, long-term performance in threaded assemblies.