3/4 inch x Close Stainless Steel Nipple

3/4 Inch x Close Stainless Steel Nipple – Threaded Schedule Fitting

The 3/4 inch x Close Stainless Steel Nipple is a precision-threaded fitting used for short-length connections in pressurized piping systems. Constructed from corrosion-resistant stainless steel, this nipple is suitable for fluid transfer, mechanical systems, and industrial-grade plumbing applications where space constraints require a close (full-threaded) configuration.

Material and Construction Details

This component is manufactured from 304 or 316 stainless steel depending on system requirements. Threads are machine-cut to ANSI/ASME B1.20.1 NPT standards for compatibility with a broad range of metal fittings and valves. The close nipple has no unthreaded section between the threads, allowing minimal spacing between mating fittings.

• ✅ Material: 304 or 316 stainless steel (verify grade based on media compatibility)
• ✅ Nominal Size: 3/4 inch
• ✅ Length: Close (full-threaded)
• ✅ Thread Standard: NPT, ANSI B1.20.1

Common Applications

Used in high-pressure and high-temperature systems including hydronic heating, compressed air, chilled water, and industrial fluid handling. Ideal for use in environments where corrosion resistance is essential—such as food processing, chemical handling, marine piping, and mechanical rooms.

Installation Guidelines

Apply approved thread sealant or PTFE tape to male threads before assembly. Thread engagement should not exceed hand-tight plus 1.5–2 turns to prevent overstressing. Close nipples require alignment considerations due to the lack of wrench flats—use adjoining components or strap wrenches as appropriate.

• ✅ Sealant Required: Thread tape or compound approved for system media
• ✅ Tool Use: Avoid over-torquing to maintain thread integrity
• ✅ Clearance: Close nipples allow minimal pipe-to-pipe separation

Performance and Compliance

• Working Pressure: Dependent on schedule rating of pipe (typically up to 1500 PSI for Schedule 80)
• Temperature Range: Serviceable from -100°F to 400°F depending on media and grade
• Corrosion Resistance: Suitable for both potable water and non-potable industrial systems
• Code Compliance: Meets applicable ASME, ASTM, and NSF standards where specified

The 3/4 inch x Close Stainless Steel Nipple is a durable, corrosion-resistant solution for system extensions, branch lines, or rigid connections where minimal spacing is required. Its strength, thermal tolerance, and chemical resistance make it suitable for critical piping systems in commercial, industrial, and mechanical environments.