What hose connection is this?

[sas_oggs]

Afternoon,

I'm installing a water pump to pump river water to a garden, there is already a delivery hose installed with a solid 2" blue pipe next to the river, I can't work out what I need to buy to connect this to a 2" petrol driven water pump:

2 hosted at ImgBB

Image 2 hosted in ImgBB

ibb.co

1 hosted at ImgBB

Image 1 hosted in ImgBB

ibb.co

Thanks
Paul

 

[ShaunCorbs]

Looks like old imperial alkathene pipe

The nut should lower down the pipe the blue bit I think is an insert / adapter to a fitting

whats the dia of the pipe

 

[Timmy D]

Looks like I got it wrong lol

 

[Aquarius]

A 50mm compression coupling if 50mm pipe, otherwise, probably a transition fitting.