15mm Double Check Valve
easy to install but can be a bit noisy at low pressure the valve sound like bee or wasp trap somewhere
don't know how long it will last due to plastic/nylon internal part
16 May 2013
Works ok but the surprising thing is that it is quite noisy. More of feature than a bug since you then know you have left the outside tap on.
27 Dec 2012
non return valve
its exactly what building control want to see by outside tap entrance (New Building)
31 Jul 2012
Good price valve
A decent price for a double check valve. Easily installed an seems to work OK, can't really comment on the Reliability as I only installed it a fortnight ago, but so far so good.
25 Apr 2011