The time has come for me to replace the stopcock on the incoming mains water pipe. It is quite old, very stiff to turn off completely and is weeping a little.
I asked before about replacing it with a full-bore ball valve and no one said it was a bad idea, so I would like to go through with it now.
I have found the main stop valve in the street for my house, but he pipe running from there in to the house is 20 mm outside diameter blue plastic pipe (MDPE?) Is the use of 20 mm un-common, 25 mm seems much more common when searching the news group.
Looking in the Screwfix catalogue they seem to have fittings for 25 mm MDPE, including a "normal" 25 mm to 22 mm stopcock but no suitable ball valves.
How would I go about fitting a ball valve between the incoming 20 mm plastic pipe and the 15 mm copper to the rest of the house?
As the stopcock is currently fitted to the 20 mm pipe with a compression fitting, I assume that there is some rigid insert in the end of the pipe. Would this increase the diameter enough to allow a 22 mm ball valve to be used?
I guess the simplest thing is to buy a replacement stopcock like the one currently fitted, but I am sold on the ease of use of a ball valve.
Thanks, BraileTrail