Description
The MUELLER USA Streamline Copper Elbow is a premium, high-performance copper fitting engineered for plumbing, HVAC, and refrigeration systems. Made from superior wrot copper, these elbows deliver long-term strength, corrosion resistance, and leak-free reliability.
Designed to allow precise directional changes in copper piping, the MUELLER Streamline series offers 45° and 90° elbows in multiple sizes ranging from 3/8″ to 1 1/8″, ensuring a perfect fit for any installation. Trusted worldwide for over 80 years, MUELLER Streamline is synonymous with American-made quality and professional-grade performance.
📏 Available Variants / Sizes
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COPPER ELBOW 3/8″ (90°)
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COPPER ELBOW 1/2″ (90°)
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COPPER ELBOW 5/8″ (90°)
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COPPER ELBOW 5/8″ (45°)
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COPPER ELBOW 3/4″ (90°)
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COPPER ELBOW 7/8″ (90°)
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COPPER ELBOW 7/8″ (45°)
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COPPER ELBOW 1 1/8″ (90°)
Each elbow is precisely machined for a tight, uniform fit that ensures smooth fluid flow with minimal pressure drop.
⚙️ Key Features
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✅ Made in USA: Genuine MUELLER Streamline fittings—known for reliability and consistent quality.
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✅ High-Quality Material: Constructed from wrot copper (C12200) for exceptional durability and corrosion resistance.
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✅ Accurate Fit: Designed for leak-free solder/sweat joints.
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✅ Dual Angle Options: Available in 45° and 90° for flexible installation.
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✅ Universal Compatibility: Suitable for Type K, L, and M copper tubing.
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✅ Industry-Approved: Complies with ASME B16.22, ASTM B88, and NSF-61 standards.
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✅ Efficient Flow Design: Smooth interior surface minimizes friction and pressure loss.
🏭 Applications
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Plumbing systems (hot & cold water supply)
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HVAC and air-conditioning units
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Refrigeration piping (suction, liquid, and discharge lines)
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Chilled water systems
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Commercial and residential copper tube installations
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System retrofits and replacements
📐 Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | MUELLER USA |
| Series | Streamline® |
| Product Type | Copper Elbow Fitting |
| Material | Wrot Copper (C12200) |
| Sizes Available | 3/8″, 1/2″, 5/8″, 3/4″, 7/8″, 1 1/8″ |
| Angles | 45° & 90° |
| Connection Type | Cup (female solder/sweat joint) |
| Operating Pressure | Up to 300 PSI (varies by size/system) |
| Temperature Range | –20 °F to +250 °F |
| Certifications | ASME B16.22, ASTM B88, NSF-61 |
| Country of Origin | USA |
💡 Why Choose MUELLER Streamline Copper Elbows?
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Over 80 years of copper fitting excellence.
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Ensures precise installation and long service life.
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Compatible with all major copper piping standards.
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Resistant to rust, scaling, and wear.
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Designed for professional plumbing, refrigeration, and HVAC systems.
📦 Product Benefits
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Saves installation time with perfect fit and consistent quality.
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Minimizes leaks and flow restriction.
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Provides smooth directional change in confined spaces.
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Maintenance-free once installed.
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Offers excellent thermal and mechanical performance.






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