>> Change just the pump head if you can; the large nuts can be devils to
>> move. I have 2 Grundfos pumps and a spare pump head so only 4 x
>> 6mm female hex bolts to remove. Grundfos pumps are all the same fitting I believe.
Ooo - Thats an interesting concept, just had a look, and yes you can get grundfos pump heads.
So why would one not buy a pump head every time? what's left in the pump body and what's in the pump head?
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