Calpeda NC3 Circulating Pumps for Sanitary Hot Water 

The Calpeda NC3 is a compact, robust hot water circulating pump designed for use in domestic and commercial heating systems. Constructed with a durable cast iron pump body and featuring a three-speed motor, the NC3 allows for flexible flow adjustment to suit varying system demands, ensuring quiet, energy-efficient performance in all hydronic heating applications.

Its in-line design with identical suction and delivery ports makes installation straightforward — especially for closed-loop systems such as underfloor heating, radiator circulation, or domestic hot water recirculation loops. With a proven track record for reliability and longevity, the Calpeda NC3 is a dependable solution for both new builds and retrofit systems.

APPLICATION

• Hydronic heating systems in homes or buildings
• Domestic hot water recirculation
• Underfloor heating circuits
• Closed-loop circulation in commercial HVAC systems
• Systems using clean, non-abrasive, and non-corrosive liquids

PUMP FEATURES

• In-line design with suction and delivery on the same axis
• Rugged cast iron pump casing
• Adjustable three-speed operation for tailored performance
• Quiet, maintenance-friendly motor
• Available with brass or cast iron unions (on request)

CONSTRUCTION

• For use with clean liquids not aggressive to pump materials
• Compatible with most water-based heating fluids
• Compact footprint ideal for space-constrained plant rooms or service cabinets