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- 14 May 2020
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Hi. I have a Grundfos UF heating pump and it seems to be very slowly leaking around the connector over time then running down the back of the pump onto the floor. The nut looks to be about 50mm in size so was going to try nipping it up a bit with a wrench but it’s hard to get a grip with that. Should I buy a correct size spanner (Is it normally 52mm?) or would some plumbers mate pushed into the gap stop it? Thanks in advance!
