The Grundfos 3/4-inch NPT Bronze Half-Union Set provides a durable, corrosion-resistant connection solution for UP Series Circulator Pumps. Designed for easy installation and secure sealing, these half-unions ensure leak-free performance in hydronic heating, domestic hot water, and potable water circulation systems.

Constructed from high-quality bronze, these fittings deliver superior strength, thermal resistance, and long-lasting reliability — even in demanding plumbing and HVAC environments. Each set includes two half-unions with 3/4-inch NPT threaded connections, offering a perfect fit for Grundfos UP Series pumps and compatible piping systems.

Certified to meet NSF/ANSI 372 lead-free standards, this half-union pair provides peace of mind for use in potable water and closed-loop circulation applications.

Key Features:

• Brand: Grundfos
• Product Type: Half-Union (Pair)
• Connection Size: 3/4 inch NPT
• Material: Bronze (corrosion- and heat-resistant)
• Compatibility: For use with Grundfos UP Series Circulator Pumps
• Standards/Approvals: NSF/ANSI 372 Listed (lead-free compliant)
• Design: Threaded connection for easy installation and secure seal
• Quantity: 1 pair