[khon kaen boy]

Went up to Global House a few months ago to order stuff for installation of booster pump/water tank at the house.
Spoke with the little assistant and showed him the drawing which I had made up of all the equipment needed, I asked him if they had 1" non return valves in stock and he produced one, so as I normally do I asked him what the Thai word was for this
With a beaming smile he replied " N...R...V ", embarrased or what, at least it's another word to add to my Thai vocabulary