Bestway Voyager 500 Inflatable Boat

Bestway valve fittings for inflatble dinghy – I have just bought a Bestway inflatable boat, model Voyager 500. There are a number of reviews praising Bestway. I don't, and give the company 1 star. This is because the two plastic fittings through which one fills the boat/dinghy with air are of no known thread and diametre as determined by an expert engineer , and are therefore basically utterly impractical unless Best way has supplied parts that fit that thread. The threads look like 5/8th inch PSB, a common plumbing thread, but they are not. Their pitch is somewhere between 13 and 14 threads to the inch which is most peculiar . These two critical parts for pumping air into the dinghy are neither of a standard metric nor imperials size and thread-pitch. They are probably unique to Bestway. This is sheer stupidity, as I want to fit a brass end-cap with an internal thread to the plastic air -fittings after I have drilled a hole in the brass end-cap to take a soldered on copper tube that fits my 12 volt car' tyre pump. I don't have the manual Bestway air-pump and there is a lot of air to pump into that inflatable dinghy.

So I regard what might be an otherwise excellent inflatable dinghy as a complete waste of money; it is impractical because of that quite probably deliberate and utterly stupid design of the two air valves for inflation.