Grundfos UPM3 FLEX 25-75 Circulation Pump – 130mm

Choose the Grundfos UPM3 FLEX 25-75 circulator for a heating installation that specifies the matching pump configuration. The current listing identifies 130mm port spacing and G 1½ inch connections. For replacements, compare the complete original pump label and control arrangement before ordering: the FLEX family includes configurations whose electrical control and performance must be matched to the system.

Key features

• Grundfos UPM3 FLEX 25-75 listed model
• 130mm port-to-port length
• G 1½ inch listed connections

Specifications

Choosing and using this product

Select the pump from the required flow and head, available space and control signal. Confirm the exact product number and suffix before treating it as a replacement; the listing name alone does not establish PWM configuration.

What else might I need?

• Pump isolation valves – check connection sizes
• Compare the complete UFH pump/mixing pack

Check component compatibility against your system specification before ordering.

Frequently asked questions

Will this replace every 130mm pump?

No. Connection dimensions, hydraulic performance, control signal and electrical connection must all match.

Is this suitable for drinking-water recirculation?

Do not assume that. Confirm the exact pump housing and manufacturer-approved application; a heating circulator is not automatically a potable-water pump.

Which information should I send when checking a replacement?

Provide a clear original pump label, full product number, port spacing and control/cable details.

Need help with your product choice? Call 0116 319 6618. For a complete underfloor heating project, send your floor plans for a quotation. Check delivery information before ordering.