Nibco Cl633-w Copper Pipe Slip Union Fitting, 3/4 In. Cxc

A copper pipe union is a two-part fitting that joins two sections of 3/4-inch copper pipe with solder-cup (sweat) connections on both ends. The Nibco CL633-W union allows plumbers and homeowners to disconnect and reconnect a pipe section without cutting or damaging the line, making it ideal for repairs, maintenance, and system modifications on water supply lines and other plumbing applications.

Union fittings solve a common plumbing challenge: accessing a section of pipe or equipment for service. Instead of cutting and soldering new pipe sections back together, a union lets you unscrew the center nut to separate the connection, then reassemble it when work is complete. This design lets you service your plumbing system with minimal disruption.

Features and Benefits

• Solder-Cup Design: Both ends feature solder cups for connection to standard copper pipe.
• Dezincification Resistance: The copper alloy is dezincification-resistant to prevent corrosion-related failures and ensure long service life.
• Disconnectable Center Nut: The center nut allows the fitting to be unscrewed and separated for easy repair and maintenance without cutting pipe.
• Lead-Free: Lead-free construction.
• 50-Year Limited Warranty: Backed by a 50-year limited warranty.
• ASME B16.22 Compliance: Meets ASME B16.22 and MSS SP-104 standards for consistent quality and proper material specifications.

Specifications

• Brand: Nibco
• Model: CL633-W
• Size: 3/4 inch by 3/4 inch (CxC, sweat by sweat)
• Connection Type: Solder cups on both ends
• Material: Copper
• Standards: ASME B16.22, MSS SP-104, NSF/ANSI 61 and 372 certified
• Warranty: 50-year limited warranty