"I have used these on several occasions, mainly as isolators for taps and toilets. So far I have found them reliable. I prefer them to the screwdriver slot type as, in an emergency, anyone can quickly turn them off without having to go and find a screwdriver of the right size - particularly important for tenants in a rental property."
"I have used these to isolate for basin taps with flexible connections and they work very well. Good quality and appear very well made. I prefer to use these rather than standard ball valve with slotted turn for ease of use."
"Good quality service valve and there are some shockers out there! I generally remove the handle whilst tightening the compression joints as it allows you to get an adjustable on the body without damaging the handle"