Hi Dave, I'm contemplating buying one of these ( link below) as it has the double check valve unlike a lot of the older second hand ones that are floating about. Bit expensive to buy new but a lot cheaper than the fines they dish out when you get caught without a check valve!
Anyone know of any that can be bought any cheaper than the one below?
http://www.aqua-check.co.uk/index.ph...eck-valve.html
t.