"Only had this fitted for 2 days so can't really comment on the reliability. Easy to install and does what a tap should do. As a previous person commented you need the plastic inserts for the incoming pipe if not already fitted. This was new to me, here's an example: http://www.screwfix.com/p/floplast-pipe-inserts-20mm-pack-of-10/33270 Product code: 33270"
"i had to hunt around plumbase, selcos for a replacement stopcock for a post war house [ blue plastic water supply under sink] which was leaking badly and finally found the exact fit. dont forget to buy the plastic inserts for the incoming water supply pipe"