Replacement central heating pump

Hi,

I have a flow error coming up on the boiler and the pump in the airing cupboard next to the tank is really noisy so think I need a new pump ! The current one is a Flowson 25-50 130 pump. Would a 15-50 130 pump be able to replace it cause I can't see any 25-50 130 pumps anywhere !

Thanks

Andy

 

Looked everyhwere to try and understand what the first number means ! cause loads of 15-50 but no 25-50 so was thinking a 15-50 would do the job !

 

Already seen those but was looking for non ebay ones !

 

That’s why I was asking . I know the 130 is mm and that 50 is 5M but not sure what the difference was between a 15 and 25 !.

 

Worked it out now !

25 is a G1 1/2 thread and a 15 is a G1 thread so could get a Wilo-Yonos PICO 25/1-6-130 G1 ½ 1 – 6 Metre 130mm