The Grundfos UPS3 is a circulation pump created for a domestic heating system. This can work with either a variable flow or a constant flow rate. The UPS3 is suitable for replacement and universal upgrades.
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       The Grundfos UPS3 is a circulation pump created for a domestic heating system. This can work with either a variable flow or a constant flow rate. The UPS3 is suitable for replacement and universal upgrades.