3/8 inch Wrot Copper Stop Coupling Copper x Copper

3/8 inch x 1/2 inch OD Wrot Copper Stop Coupling – Built for Secure, Code-Compliant Transitions

The 3/8 inch x 1/2 inch Outside Diameter Wrot Copper Stop Coupling provides a reliable method for joining copper tubing of different sizes in water distribution and hydronic systems. Manufactured in compliance with ASME B16.22 and NSF/ANSI 61/372 standards, this fitting ensures consistent performance in pressure-rated applications, including potable water lines and closed-loop systems.

Constructed from lead-free wrot copper, this coupling is engineered to deliver long-term corrosion resistance and thermal stability. Its stop feature allows for accurate pipe insertion depth during assembly, promoting alignment and helping prevent over-insertion during soldering. This is particularly beneficial for installers working in tight quarters where precision is critical.

Key Specifications

• Material: Lead-free wrot copper (ASTM B75/B88 compliant)
• Connection Type: Copper tube size slip connection with internal stop
• Size: 3/8 inch OD x 1/2 inch OD
• Standard Compliance: ASME B16.22, NSF/ANSI 61 & 372 (lead-free for potable systems)
• Pressure Rating: 200 PSI max at 100°F (dependent on tube and joint quality)

Professional Use Cases

• Transitioning between 3/8 inch and 1/2 inch copper tubing in water supply systems
• Utilized in both new construction and retrofit plumbing applications
• Common in kitchens, bathrooms, and utility rooms requiring compact, precise fittings

Installation Guidance

This coupling is designed for soldered connections. Clean and deburr both tube ends, apply flux, and heat evenly before introducing lead-free solder. Ensure full insertion to the internal stop and maintain joint integrity during cooling. As with all soldered fittings, verify system integrity through pressure testing after installation.

Contractor Notes

• Use mechanical joint indicators (depth gauges or witness marks) to verify full seating during installation.
• Avoid overheating, which may degrade joint strength or damage adjacent tubing.

The 3/8 inch x 1/2 inch OD Wrot Copper Stop Coupling provides a durable, code-compliant solution for contractors seeking high-integrity performance in potable or closed-loop piping systems. Its lead-free construction and precision-machined design make it a staple in modern copper piping installations.