Why is DIN not the standard in diving?

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jcm

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Location
Atlanta GA
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Why is DIN not the standard in diving?

I have always wondered why they had two styles DIN and Yoke? But it seems in recreational diving Yoke is the way more common. DIN is a lot stronger hold once it is on the tank. There are fewer chances of things going wrong with it like getting bumped, and it is not any harder to install to the tank. Not that I am saying yoke is a bad system I would just think that the industry would want to go with 1 standard system since a dive shop may have the regulator you want but not in the configuration you want with yoke or din.
 
I agree, I have only use DIN for the past three years, just carry an Alan key in your kit for when you come across a yoke school and all is good
 
Yoke is way more UNCOMMON around here. It depends a lot of your location and also to some extent of what type of divers youre around.

The question why theres DIN and Yoke is kinda like "why does the US use imperial units instead of metric"
 
Yoke is standard because it's been around in rec diving longer, I suspect, and the government in your (our) area hasn't deemed it necessary to mandate DIN for safety.

It works, it's prolific, and it's not any less reliable for OW diving. Changing it would just cause unneeded cost to thousands of businesses and hundreds of thousands of individual divers... What's really to be gained by doing that?
 
.... just carry an Alan key in your kit for when you come across a yoke school and all is good

Providing the valve is adaptable. It is pretty rare around here to see a rented AL80 with a convertible valve.
 
With DIN everyone is running in and out of threads. When you have Tom Dick and Harry using the same tank a lot of wear takes place. Some folks are real klutzs when it comes to matting threads. Even the use of beat up fill station whips can haunt your valve and then you regulator connector. A yoke connection is a clean face mating and it's transparent from user to user.

Sand or grit in a DIN connector is no fun. Yoke is more forgiving where this is an issue, hopefully never but crap happens.

A DIN connector's swivel stem can break free especially if distubed before pressurizing.

If you rinse a yoke connection before breaking it free the other critical surfaces are clean ad dry. DIN connectors and valves require periodic thread cleaning since they are exposed to the salt when in the ocean. This goes back to the first point where ow we have saly encrusted threads mating again and again.

I agree that DIN is a more positive connector. However don't kid yourself into believing that it is a panacea and yoke users are fools. Yoke is much more amenable to transient resort users.

Pete

PS, I use both.
 
I have two DIN and three Yoke 1st Stages...so I can always find something that will work without an adaptor :)
 
The question why theres DIN and Yoke is kinda like "why does the US use imperial units instead of metric"


Furlongs per fortnight. It was good enough for my grandfather, it's good enough for me :D
 
I guess this has to do with the longevity of rental equipment? It's pretty hard to damage a yoke... but the DIN screw-threads on the cylinder valve or regulator only take a klutz to destroy...
 
https://www.shearwater.com/products/peregrine/

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