Yeah well my egyptian does. I think if you order a 2 hose like that, it will have one. But if you get a one hose and then get a hose adapter, there wont be a purge valve.
Eek Having a 2 hose hookah with no purge sucks so bad. My 1st hookah (a chinese blade hookah) was like that and it sucked. Although it did have a autoseal tho 8)
BTW if you want a two hose but aren't too sure about the valve, you should call the vendor up or email them first so you will know first hand.