Pipe Fittings Close Nipples Male NPT – 1/8", 1/4", 3/8", 1/2", 3/4", 1" – 10000 PSI – ASME B1.20.1 / SAE AS71051 / ISO 7-1 / ISO 228

Pipe Fitting

Also known as:

Pipe Connectors, Piping Fittings, Fittings

Pipe Fittings Close Nipples Male NPT – 1/8", 1/4", 3/8", 1/2", 3/4", 1" – 10000 PSI – ASME B1.20.1 / SAE AS71051 / ISO 7-1 / ISO 228

Pipe Fitting

Also known as:

Pipe Connectors, Piping Fittings, Fittings

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6 - 8 Weeks

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Close Nipples Male NPT are short, threaded connectors that join two female NPT pipes in tight spaces, offering a compact and direct connection unique for space-limited installations.

Executive Summary

Close Nipples Male NPT are short threaded connectors used to join two female NPT pipes in oil and gas piping systems. Their compact size makes them ideal for tight spaces while maintaining a secure and leak-proof connection.

They are used in pipelines, instrumentation lines, and process systems where space is limited but reliable flow and alignment are essential. These fittings meet industry standards including ASME B1.20.1, SAE AS71051, ISO 7-1, and ISO 228, ensuring safe and consistent performance in high-pressure environments.

Technical Specifications

Size Range 1/8” to 1”
Material SS 316, Brass, Carbon Steel
Temperature Range for Ratings -28 to 37°C (-20 to 100°F)
Pressure Ratings Based on ASME B31.3 at ambient temperature
Thread Engagement Standard ASME B1.20.1 for NPT threads
Internal Surface Burr-free
Cleaning Free from machine oils, loose particles, grease
Type Instrumentation and Process Control
Thread Protection Capped and properly packed
Recommended Seal PTFE tape for male tapered threads

Features and Benefits

  • Compact, short design for tight spaces.
  • Male NPT tapered threads for secure connections.
  • Burr-free internal surfaces for smooth flow.
  • Reduces pressure drop in fluid or gas systems.
  • Allows installation in confined or limited-access areas.

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Detailed Description

Close Nipples Male NPT are precision pipe fittings designed to connect two female NPT threaded pipes in oil and gas and process systems. Their short, compact design allows installation in tight spaces while providing a reliable and leak-tight connection. Manufactured from high-quality materials such as stainless steel, brass, or carbon steel, they offer corrosion resistance and durability for demanding industrial environments.

The fittings are produced with burr-free internal surfaces to ensure smooth flow and minimize pressure drop. All threads are tapered in accordance with ASME B1.20.1 and SAE AS71051 standards, allowing secure engagement and leak-free sealing when used with appropriate thread sealants. Close Nipples are suitable for instrumentation lines, pipelines, and other fluid or gas transfer systems where precise alignment and compact installation are required.

They are rated for pressures up to 10,000 PSI, depending on material and size, and are marked with manufacturer, size, material, and heat code for traceability. The fittings are thoroughly cleaned to remove oils, grease, and loose particles, ensuring safe use in sensitive applications. Their simplicity, high-pressure capability, and space-saving design make them a reliable choice for critical connections in oil and gas operations.

Engineering Data