Seal off a 1-1/2 in copper run with confidence using the NIBCO 1-1/2 in Sweat X 1-1/2 in D Cap Copper Cap. This lead-free, NSF-listed cap is engineered for lasting performance, with a sweat connection on one end and a 1-1/2 in cap on the other, making it ideal for permanent terminations in copper piping systems. Built to withstand underground installations, it delivers a durable, leak-resistant finish that you can trust behind walls or in buried applications.
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Lead-free copper construction ensures safe potable-water use and long-term durability in harsh environments.
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Two-end design: a 1-1/2 in sweat connection on one side and a 1-1/2 in cap on the other for a clean, soldered joint and a secure seal.
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Underground-rated: rated for burial and exposure in typical utility and irrigation installations, reducing the risk of compromised joints.
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High-pressure tolerance: supports up to 408 psi, providing a robust solution for residential and commercial copper systems.
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NSF-listed for potable water compatibility and safety, giving you confidence in water quality.
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Trusted brand: NIBCO’s quality manufacturing translates to reliability in everyday plumbing repairs and installations.
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Package includes: 1 cap per package, ready for immediate use in your project.
Ideal use cases
- Capping a live 1-1/2 in copper run during remodeling, expansion, or future connections.
- Sealing off dead-end lines in residential or commercial potable-water systems.
- Temporary or long-term closures in underground copper installations such as irrigation mains or service lines.
Why this cap stands out
- Compared with non-metal or non-soldered options, copper with a sweat joint provides superior durability and a heat-fused seal that stands up to time and pressure.
- The combination of a reliable sweat end and a cap end delivers a simple, code-compliant solution for clean, professional terminations.
- NSF listing and lead-free composition align with modern plumbing codes and health-safety standards, making it suitable for potable-water applications.
To install, prepare the pipe ends, apply appropriate flux, heat the sweat joint evenly, and use lead-free solder to form a secure connection before capping the line. With its robust copper construction, underground suitability, and trusted NIBCO quality, this 1-1/2 in sweat x 1-1/2 in cap is a dependable choice for durable, leak-free copper plumbing projects.
