Side point, ive stopped using gooseneck valve from gardiner. With a heavier brush i needed to tighten the grub nuts. After a couple of days usage, it never really switched the flow off properly. So i thought i would take apart and look, following gardiners vid on it. The small spring has got lodged in the mechanism so i need to spend some time faffing to get it out. So untill my time schedule changes, ive gone back to tap valves. They lasted me nearly 2 yrs