The Grundfos manifold pump & mixing valve unit is an A-rated, all-in-one mixing/blending valve, inlet connections and pump assembly. This pump pack saves the installer from having individual connections between the manifold, pump, blending valve etc.
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Send PlansAchieve precise temperature control and efficient heat distribution with the Grundfos UPM3 Pump & Mixing Valve Unit. Designed for use with water-based underfloor heating systems, this compact assembly combines a high-performance circulation pump with an integrated mixing valve, helping to deliver the ideal flow temperature to your underfloor heating circuits.
By blending hot water from your primary heat source with cooler return water from the system, the mixing valve ensures your underfloor heating operates at safe and efficient temperatures. This can improve comfort levels, reduce energy consumption and maintain a consistent heat output throughout your property.
A Grundfos UPM3 Pump & Mixing Valve Unit is used to regulate water temperature and circulation within a wet underfloor heating system. Most boilers and heat sources produce water at temperatures that are too high for underfloor heating applications. The mixing valve lowers the water temperature before it enters the manifold, protecting the system while ensuring optimal performance.
The integrated easy fit pump then circulates the conditioned water through the underfloor heating circuits, helping to maintain even temperatures across every zone. This makes the unit an essential component for homeowners and installers looking to achieve reliable and energy-efficient underfloor heating operation.
The Grundfos UPM3 Pump & Mixing Valve Unit is suitable for a wide range of underfloor heating installations, including:
Underfloor heating systems typically operate at much lower temperatures than traditional radiator systems. A mixing valve reduces the temperature of water supplied from the heat source, ensuring the underfloor heating system receives water at the correct operating temperature for efficient and safe performance.
Yes. The Grundfos UPM3 is designed as a high-efficiency circulation pump that automatically adjusts its performance based on system demand. This helps reduce electricity consumption while maintaining effective heat distribution throughout the property.
In many installations, yes. However, suitability depends on the specific heat pump system design and operating temperatures. We recommend checking system requirements or speaking to our technical team to ensure compatibility.
Most Grundfos UPM3 pump and mixing valve units are supplied as a pre-assembled assembly, making installation quicker and helping to reduce time on site. Always check the individual product specification for exact details.
The unit is designed to work with compatible underfloor heating manifolds. Before purchasing, it is important to confirm connection sizes and system requirements to ensure compatibility with your chosen manifold.
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