the valve however was broken and useless but i figured if i get a spare camelbak one it should go straight in, alas it wasn't a massive snug fit as the halfords valve was slightly larger nothing a cable tie wont fix though.

so what did my good friends upstairs charge me for it all?
just the full price of the valve minus my staff discount, the hydration pack was free! all for the princely sum of £5.09