1 inch x 5-1/2 inch Brass Nipple

1" x 5-1/2" Lead-Free Brass Pipe Nipple – Threaded Fitting for Potable and Non-Potable Applications

The 1" x 5-1/2" brass pipe nipple is a straight-threaded fitting used to extend pipe runs or connect two female-threaded fittings. Machined from lead-free brass bar stock, this component meets applicable federal and state low-lead requirements, making it suitable for potable water systems, as well as oil, air, or inert gas applications under specified conditions.

Application and Performance

This fitting is used in water distribution, mechanical, and HVAC systems where corrosion resistance, thread integrity, and dimensional consistency are critical. Its compact length of 5-1/2 inches is ideal for installations requiring short extensions without compromising flow.

Specifications

• Material: Lead-free brass (compliant with NSF 61-G, NSF 372)
• Nominal Size: 1 inch
• Length: 5-1/2 inches
• Connection Type: Male National Pipe Thread (NPT x NPT)
• Temperature Range: -65°F to 250°F (varies by application)
• Pressure Rating: Rated up to 1200 psi non-shock for water, oil, or air (WOG)
• Standards: ASME B1.20.1, ANSI/NSF 61, ANSI/NSF 372

Installation Guidance

Threaded installation requires the use of a compatible sealing compound or thread tape. Over-torquing should be avoided to prevent stress cracking. Threads are precision-machined to ensure tight mating and reduce the risk of joint leakage under thermal or mechanical stress.

Typical Use Cases

Commonly used in plumbing distribution systems, equipment connections, and pump assemblies. This nipple is applicable in both residential and commercial systems, including hot and cold water lines, compressed air systems, and low-pressure fuel or lubrication setups.

Material Advantages

Lead-free brass resists dezincification and offers excellent machinability, corrosion resistance, and long-term performance in a range of fluid-handling environments. It also maintains dimensional stability under temperature fluctuations common to building mechanical systems.