Discover the reliability of the B&K ProLine 3/4 in. CTS to 3/4 in. CTS Brass Coupling—a purpose-built connector crafted for durable, lead-free copper tube installations. Designed to meet everyday plumbing demands, this brass coupling delivers a solid, corrosion-resistant joint that you can trust in your potable water system.
Key specifications
-
Material: Brass (lead-free)
-
End 1: 3/4 in CTS
-
End 2: 3/4 in CTS
-
Maximum pressure: 125 psi
-
Maximum temperature: 210°F
-
Product type: Coupling
-
Brand: B&K ProLine
-
ANSI certified: No
Why this ProLine coupling stands out
Lead-free brass matters. This coupling is designed for safe, long-lasting connections in residential and light commercial plumbing, helping reduce health risks and corrosion over time. Its CTS (Copper Tube Size) ends ensure a precise fit with 3/4 in. copper tubing, making it a dependable choice for repair work, extensions, or new runs without compromising flow or pressure performance.
Ideal use cases
- Repairing a leaking 3/4 in. copper line in kitchens, bathrooms, or laundry rooms
- Extending a 3/4 in. CTS copper run when updating or reconfiguring an installation
- Replacing aging connectors in potable water systems where lead-free compliance is important
- DIY projects and professional jobs alike, where a simple, reliable CTS-to-CTS connection is required
Practical guidance for using this coupling
Before installation, ensure both tubed ends are clean and free of burrs, and that the tubing diameter matches the 3/4 in. CTS specification. Although ANSI certification isn’t listed for this specific part, it’s well-suited for typical domestic water service and light commercial applications within its 125 psi/210°F rating. Always verify local code compliance and pair with compatible fittings as part of a well-planned assembly.
Durability and performance you can rely on
The brass construction provides robust resistance to corrosion and wear in everyday water systems, while the 3/4 in. CTS ends deliver consistent, dependable engagement across connections. The 125 psi maximum pressure and 210°F maximum temperature make this coupling suitable for standard residential water lines and many non-thermally extreme piping scenarios.
