Ndl Industries NIPPLE3/8XCLS Black Steel Pipe Nipple 3/8 in

Product Description

The NDL INDUSTRIES NIPPLE3/8XCLS is an extra heavy (XH) black steel close nipple in 3/8 inch pipe size. A close nipple is fully threaded end to end with no unthreaded center, making it ideal for situations where fittings must connect with minimal space between them. This fitting is used in gas, steam, air, and water piping systems and is installed by licensed plumbers, pipefitters, and HVAC technicians. The extra heavy wall schedule provides additional strength and pressure tolerance compared to standard weight nipples.

This close nipple is suited for residential and light commercial piping applications where threaded black steel fittings are specified. Common uses include gas distribution lines, boiler piping, steam systems, and compressed air systems. The black steel finish is standard for gas service piping and is compatible with black malleable iron and black steel threaded fittings throughout a system.

Key Features

• Extra heavy (XH) wall construction for increased pressure rating over standard weight nipples
• Close pattern — fully threaded end to end with no exposed center pipe
• 3/8 inch nominal pipe size with NPT threads
• Black steel material standard for gas service and steam piping
• Designed to mate directly with standard threaded black steel and malleable iron fittings

Compatibility

Designed as an OEM-style replacement or new-installation fitting for 3/8 inch threaded black steel piping systems using standard NPT connections.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local codes, the International Fuel Gas Code (IFGC), or the International Plumbing Code (IPC) depending on application. Shut off and depressurize the system before disassembly or installation of any threaded fitting. Apply an appropriate pipe thread sealant or PTFE tape rated for the service media before threading. Do not over-tighten or use tools that could crack or strip the threads on this close nipple.

Technical Specifications

• Pipe Size: 3/8 inch
• Pattern: Close (fully threaded)
• Wall Weight: Extra Heavy (XH)
• Material: Black Steel
• Thread Type: NPT

Standard Information

• Brand: NDL INDUSTRIES
• Manufacturer Part Number: NIPPLE3/8XCLS