My friend ordered a KM Kafae (or Cafe, as the shop calls it) from hookahshop.co.uk. The pipe has arrivied to him, but inside the valve he doesn't find ball bearing. Is this correct with KM pipes? I don't believe that KM pipes don't need that important attachment. Does he need to buy this ball or the KMs have got another solution to not suck that clean air just the smoke?
Thank you very much, and please don't offense my english, I'm Hungarian
Greetings from Hungary!