1/2 inch x 3 inch Stainless Steel Nipple

1/2" x 3" Stainless Steel Pipe Nipple – Threaded Schedule 40 Connector

The 1/2" x 3" Stainless Steel Nipple is a Schedule 40 pipe section with male National Pipe Taper (NPT) threads on both ends. It is used to connect two female-threaded components in pressurized systems requiring corrosion resistance and structural integrity. Typical applications include potable water distribution, compressed air systems, and low-pressure steam or chemical lines.

Manufactured from 304 or 316 stainless steel, this fitting conforms to ASTM A312 pipe standards and ASME B1.20.1 for thread specification. The consistent wall thickness and uniform threading ensure compatibility with standard pipe fittings in industrial and commercial installations.

Product Characteristics

• ✅ Material: 304 or 316 stainless steel for corrosion resistance in potable water, chemical, and high-humidity environments.
• ✅ Length: 3 inches overall, measured end-to-end including thread length.
• ✅ Thread Type: NPT male x NPT male, manufactured to ASME B1.20.1 specification.
• ✅ Wall Thickness: Schedule 40 for compatibility with common pressure piping applications.
• ✅ Working Pressure: Up to 150 PSI (varies by system design and medium).

Installation Considerations

This fitting should be installed using a pipe thread sealant or PTFE tape on the male threads to ensure leak-free sealing. Proper torque must be applied during installation to avoid thread damage or over-tightening. Installation should follow applicable mechanical and plumbing code practices for threaded joints in stainless steel systems.

Common Applications

Frequently used in potable water, process piping, commercial HVAC systems, food-grade installations, and environments where exposure to corrosive substances requires durable connections. This 3" nipple allows for rigid spacing between components such as valves, couplings, or tees within stainless systems.

Technical Note

Stainless steel pipe nipples are often specified in corrosive or regulated environments where galvanized or black steel would not meet longevity or code requirements. Type 316 is recommended in chloride-rich or marine conditions, while 304 is widely used for general service piping.

Specification Summary

• Nominal Size: 1/2 inch
• Length: 3 inches
• Material Standard: ASTM A312 (pipe body), ASME B1.20.1 (threads)
• End Connection: NPT Male x NPT Male
• Pipe Schedule: Schedule 40
• Compliance: NSF/ANSI 61 and 372 (when used in potable systems)