"Great taps for shutting water supplies off in the house. Stop cocks and gate valves take a few turns but quarter turn is all that is needed with these. Bought gate valves 27542 and 85316 before and they never shut off completely.
Isolator valves are good for the money but the brass screwdriver slot gets damaged if used frequently, not used correct size screwdriver, etc. These valves don't need a screwdriver.
If you have a rented property and a there is a leak, any tenant is competent enough to shut off the water supply until a plumber arrives to investigate the problem so I would have them on every pipe run."
"Bought 3 of these. as I needed two and 3 makes it cheaper and also a spare. Fitted first one fine, went for the second one, first nut was fine, second nut started fine, then when I met resistance from the olive, the nut cracked and a large chunk fell off. Bit disappointed, as had to remove the new slightly compressed olive. Luckily had my spare, and just fitted the new olive and nut. Valves are great, and shut off the water effortlessly. Better than a stop cock anyday of the week. Screwfix replaced the broken unit, no quibbles."