2-1/2 inch x 2 inch Copper Reducing Coupling with Stop Copper x Copper

2-1/2” x 2” Copper Reducing Coupling – Solder Joint, Lead-Free

The 2-1/2” x 2” Copper Reducing Coupling is designed for joining copper tubing of differing diameters in plumbing systems requiring a reliable, soldered connection. This fitting facilitates smooth transitions between 2-1/2” and 2” nominal pipe sizes, maintaining full flow and system integrity without reducing velocity or pressure performance.

Manufactured from lead-free wrought copper, this reducing coupling complies with ANSI/ASME B16.22 and is third-party certified to NSF/ANSI 61 and NSF 372 for potable water applications. Its uniform wall thickness and precision-machined socket ends promote consistent capillary action during soldering, ensuring a secure, leak-resistant seal.

Specifications

• Size: 2-1/2” x 2” nominal
• Connection Type: Cup x Cup (sweat ends for soldered joints)
• Material: C12200 copper (deoxidized, phosphorus-bearing seamless copper)
• Compliance: Lead-free per ASTM B75/B88; conforms to ASME B16.22; NSF 61 & 372 certified
• Pressure Rating: Up to 200 PSI (soldered joint, typical water service conditions)
• Temperature Range: 0°F to 400°F depending on solder alloy used

Installation Considerations

Professional-grade copper soldering is required for correct installation. Clean all mating surfaces with a tubing brush or emery cloth before applying flux. Heat uniformly and apply solder for a full-depth bond. Ensure cooling before pressurizing the system. Always follow local mechanical and plumbing codes when installing copper pressure fittings.

Applications

• Potable water supply lines
• Hydronic heating systems
• Chilled water and HVAC systems
• Compatible with hard and soft copper tubing

Usage Note

This reducing coupling is most commonly applied in branch transitions, water riser terminations, or manifold configurations where size reduction must occur in-line. The long cup depth and uniform sizing help ensure full solder fill and minimize the risk of leak paths under system pressure.

All fittings of this class must meet lead-free mandates under the Safe Drinking Water Act. The 2-1/2” x 2” Copper Reducing Coupling is manufactured to those standards and is suitable for use in both commercial and residential potable water systems.