Grundfos UP15-18BUC5 Circulator Pump 1/25 HP 115V Bronze with Check Valve

The Grundfos UP15-18BUC5 is a compact single-speed circulator pump designed for residential hot water recirculation and hydronic heating systems. This reliable pump features a 1/25 horsepower motor operating on 115V power, delivering efficient and quiet performance for continuous circulation applications.

Key Features:

• Bronze pump housing with 1/2-inch sweat connections for direct soldering to copper pipe
• Integral check valve prevents reverse flow and thermosiphoning when pump is off
• Single-speed operation at 3250 RPM for consistent flow rates
• Compact cartridge design allows for easy maintenance and replacement
• Whisper-quiet operation suitable for residential installations
• Wet rotor design provides self-lubrication and eliminates the need for external seals
• Maximum head of 18 feet and flow rate up to 20 GPM
• Temperature range: 36°F to 230°F (2°C to 110°C)
• Suitable for potable water and closed-loop hydronic systems

The UP15-18BUC5 is ideal for maintaining instant hot water at fixtures, reducing water waste, and improving comfort in residential plumbing systems. The integrated check valve eliminates the need for a separate component, simplifying installation. Grundfos Model 59896123.