Sentences correct

Are the following sentences natural?

As you can see in the video, the black sleeve houses the flow/ return and the mains. Offeld Services will return in the morning and cut right round the sleeve to see where the water is flowing.

They suspect it could be from the same direction which the leak detection specialist identified in his report.

Further along you can see that the blue sleeve is teed into LG04, even though you can't see it in the video.