Smith-Cooper 1-1/2 in. MPT Stainless Steel 3 in. L Nipple is a rugged, lead-free pipe connector designed to meet the demands of potable water lines and light industrial piping. With a 1-1/2 inch male pipe thread (MPT) and a compact 3 inch length, this nipple delivers a dependable, easy-to-use connection in tight spaces.
Why choose this stainless steel nipple? It combines corrosion resistance with a clean, lead-free profile, making it a safer choice for potable water and other systems where cleanliness and longevity matter. Stainless steel stands up to moisture, humidity, and varying temperatures more reliably than brass or galvanized alternatives, helping your installations stay leak-free longer.
Key benefits
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Lead-free and safe for potable water — designed to minimize contaminants while delivering reliable performance.
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1-1/2" MPT end — compatible with standard male threaded fittings and adapters.
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3" overall length — flexible enough for installations with limited space while maintaining a solid seal.
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High-pressure capability — rated up to 300 psi for confidence in both residential and light commercial applications.
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Material and durability — stainless steel construction for long-lasting strength in challenging environments.
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Packaging — bagged to protect threads during shipping and storage.
Practical use cases
- Connecting copper, plastic, or steel piping systems in potable water lines where a secure MPT connection is required.
- Replacing aging nipples in heating and cooling circuits where corrosion resistance is essential.
- Any project needing a reliable stainless steel nipple that resists rust in humid or damp environments.
Installation tips
- Clean threads and apply an appropriate thread sealant or PTFE tape compatible with stainless steel and your chosen piping material.
- Hand-tighten, then snug with a wrench—avoid over-tightening to prevent thread damage.
- Inspect for leaks after pressurizing the system and re-tighten as needed following standard piping practices.
Choose the Smith-Cooper 1-1/2 in. MPT Stainless Steel 3 in. L Nipple for a trustworthy, lead-free connection that performs when it counts. It’s the robust, corrosion-resistant option professionals rely on for reliable piping joints that stand the test of time.
