my brother has asked if I can help sort out some plumbing issues, he has a stopcock where the mains water enters the house, conveniently easy access directly under the sink, he has sent me a photo of the setup.
The trouble is that the stopcock wont shut off properly, very hard to turn and when it wont go any further there is still water coming through to the taps, so I am planning on replacing the stopcock (I know this should be in another question but if anyone knows a way of fixing it then that would be helpful).
As I am planning on replacing it I would like to know what the two items are? that are circled in the photo. If they are not required I'm planing on removing them and tidying up some of the pipe work unless they are required.
I may ask a post another question unless it can be answered here, but there does not seem to be much room at the bottom if the stopcock where it connects to the blue plastic water mains pipe, what would be the best method for making the connection to the stopcock