What model is this oil pump - have a guess

[cwr]

Hi all

I need to replace this oil pump from a boiler. It's a Danfoss,  I can tell that much....

Unsurprisingly there appears to be a multitude of possible models it could be. Ideas ideas if where to go from here? 

 

[marshian]

Send a picture to Danfoss and ask them??

 

Google "images" Danfoss oil pumps and see if you can match it on the web and see where the links take you

[IanR]

31 minutes ago, cwr said:

I need to replace this oil pump from a boiler. It's a Danfoss,  I can tell that much....

Looks very similar to BFP 21 L 3 071N0156

https://www.ebay.co.uk/itm/325254847243?hash=item4bbab31b0b:g:DyIAAOSwBjti0B65

[dpmiller]

tell us what burner and boiler it is, and do you know the direction of rotation?

 

or if you're stuck there's always

https://www.bes.co.uk/universal-oil-pump-16393/

Edited January 26, 2024 by dpmiller

[cwr]

Yes, but there are a number of models it looks similar to. 

[cwr]

Actually,  looking at the data sheets they're not all the same, will study some more.

 

Is it safe to assume the drive to them is all the same?

[cwr]

I don't have a photo of it to hand, but the burner's model number has also disappeared over time...

[Carrerahill]

19 hours ago, cwr said:

Hi all

I need to replace this oil pump from a boiler. It's a Danfoss,  I can tell that much....

Unsurprisingly there appears to be a multitude of possible models it could be. Ideas ideas if where to go from here? 

 

Why do you need to replace it, what part of it has failed? I only ask as I repaired a drive shaft/gear spline/key on one of these not long ago, it was pulsing the oil pressure and it turned out to be the gear slipping on the drive shaft. 

Edited January 26, 2024 by Carrerahill

[cwr]

It had sized up. Tried freeing it, but it's not great and still too stiff with the screws tightned. Looks a bit corroded inside.

[dpmiller]

the mount and shaft *should* be universal but there are some outliers. Direction of rotation and pipe positions are the critical bit, some of the other options (position of the regulator etc) may not be so important for most applications...