halocline
Contributor
The reason some dive shops and manufacturers restrict parts and otherwise discourage self service is simple; they can get away with it because the market is so small. The automotive industry simply cannot get away with it. There's enough of a market for parts that aftermarket companies will produce parts, which basically forces the manufacturers to sell parts themselves or lose all the parts business. If the market for regulator parts was big enough, the same thing would happen. As it stands there is a tiny market for some specific regulator parts, and as an example, vintage double hose is now producing and selling rubber parts for many vintage regulators, including some parts that are still available to dealers from the manufacturer.
It's about money, pure and simple. The liability bit is particularly absurd when you consider that the 'training' for certified technicians at dive shops consists of a weekend seminar that nobody fails. And the dive shops would have much less liability for the sale of parts than for actually doing the service. After all, at that point they are only responsible for the integrity of the part, NOT the service. So on the liability thing, BULL$H!T.
It's about money, pure and simple. The liability bit is particularly absurd when you consider that the 'training' for certified technicians at dive shops consists of a weekend seminar that nobody fails. And the dive shops would have much less liability for the sale of parts than for actually doing the service. After all, at that point they are only responsible for the integrity of the part, NOT the service. So on the liability thing, BULL$H!T.