1 inch x Close Galvanized Steel Nipple

1 Inch x Close Galvanized Steel Nipple – Threaded Fitting for Fluid and Gas Systems

The 1 inch x Close Galvanized Steel Nipple is a schedule-rated fitting used for joining two female-threaded components in pipe systems where space is limited. Manufactured from zinc-coated carbon steel, it is intended for use in water distribution, compressed air, low-pressure steam, and fuel oil systems.

Material and Construction

This fitting is fabricated from welded or seamless steel pipe and hot-dip galvanized in accordance with ASTM A153. The galvanization process provides corrosion resistance and prolongs service life in environments subject to moisture exposure or mild corrosive agents.

• ✅ Galvanized Coating: Zinc plating mitigates oxidation, protecting the underlying steel substrate.
• ✅ Threaded Ends: Male NPT threads conform to ANSI B1.20.1 for uniform engagement with female-threaded components.
• ✅ Close Nipple Configuration: Minimal length with no unthreaded center section, allowing for compact installations.

Typical Applications

Close nipples are commonly used in applications where full-thread contact is necessary over a short span. Typical use includes boiler connections, branch extensions, manifolds, and short-distance transitions within mechanical rooms or meter settings.

Installation Parameters

Apply thread sealant or PTFE tape to male threads to ensure a leak-resistant joint. Tighten using suitable pipe wrenches, taking care not to overtighten and distort the threads. Not recommended for use with potable water systems where internal coating integrity is critical unless specifically approved.

System Compatibility

• ✅ Nominal Pipe Size: 1 inch
• ✅ Length: Close (threads run entire length of fitting)
• ✅ Thread Type: NPT – ANSI B1.20.1 compliant
• ✅ Material: Galvanized Steel, ASTM A53 Grade A/B base pipe

Key Features

• ✅ Corrosion Protection: Zinc coating resists rust in exposed or damp environments.
• ✅ Precision Threads: Ensures secure, leak-free joints when used with compatible NPT fittings.
• ✅ Compact Form Factor: Ideal for tight spaces where standard-length nipples are unsuitable.

Notes on Usage

Not suitable for use with acidic or aggressive fluids that may compromise galvanized surfaces. For natural gas or propane distribution, verify that local codes permit galvanized pipe in the specified system. Always ensure compatibility with surrounding materials to prevent galvanic corrosion in mixed-metal assemblies.