Maybe silly

[henryrodriguez]

so can anyone tell me the differance between yoke and 200/ 300 DIN besides regulater connection to tank. Im assuming DIN are rated to specific depths but what are yokes good for.

 

[Jeff Toorish]

Seek and ye' shall find:
Valves, Regulator Fittings, Cylinder Neck Openings -- More than you wanted to know

 

[fisherdvm]

I think DIN are preferred to yoke for technical diving as it is more "secure". Basically, you have two big knobby thing next to the tank when you have yoke, but only one knobby thing next to the din. If you are out of air, or have an air emergency - and you reach back - you don't have to worry about which knob is the right one. Also, the O ring in a din is deep inside the recess of the threaded female fitting of din, thus less exposed to the environment. Third, if you accidentally hit the yoke hard, the O ring could potentially "blow" and release all your air, this is harder to occur in a deeply protected recess of the din body. If you had a pony, for instance, and you had your air turned off - if you had an out of air situation, and you grab the wrong knob, you'd loosen up your yoke fitting instead of turning on the air with a yoke set up - of course, this will let salt water into your reg. With a din, only one knob is grabbed, and it is the right one. Some older yoke regulators are weak, and can not stand the higher pressure of today's tanks.

Unfortunately, yoke fitting is the most common tank valve in north america. I guess din is more widely accepted in Europe.

If a diver had a choice, I guess for convenience, yoke is the way to go in the US. Most recreational divers use yoke. However, if you purchased a din threaded reg, you can buy a relatively inexpensive "yoke to din" adapter that screws into your din regulator and allow you to use a din fitting.

 

[ScubaSarus]

As fisher stated and to add: if you have a O-ring blowout with DIN, the air also has to pass by the threads. With yoke its a free flow out of the cylinder and can drain it in quite faster than a DIN blowout.

Ide like to be corrected as the air does readily seep by the DIN threads and would like to know the diff. in times of drainage of DIN vs Yoke blown O-ring.

 

[fisherdvm]

As fisher stated and to add: if you have a O-ring blowout with DIN, the air also has to pass by the threads. With yoke its a free flow out of the cylinder and can drain it in quite faster than a DIN blowout.

Ide like to be corrected as the air does readily seep by the DIN threads and would like to know the diff. in times of drainage of DIN vs Yoke blown O-ring.

I don't think the issue here is drain time. I think you can take a small ball peen hammer, and hit a yoke first stage hard enough to cause a leak and bending the yoke. Whereas, with din, your connection is hidden inside a durable cast metal housing of the tank valve. My guess is, if you had an O ring leak (blow out to be specific) of a yoke attachment, your air will likely drain in less than 2 minutes. But a din valve O ring leak will likely take at least 5 minutes or more. Just guessing.

 

[Garrobo]

Evidently the 'yoke' setup is satisfactory for 99% of divers since I've never seen a DIN setup being used so far.

 

[Nick_W]

I don't think the issue here is drain time. I think you can take a small ball peen hammer, and hit a yoke first stage hard enough to cause a leak and bending the yoke. Whereas, with din, your connection is hidden inside a durable cast metal housing of the tank valve. My guess is, if you had an O ring leak (blow out to be specific) of a yoke attachment, your air will likely drain in less than 2 minutes. But a din valve O ring leak will likely take at least 5 minutes or more. Just guessing.

Let's not guess out loud, please.

Have you ever tried to take a yoke first stage off a tank without purging the regulator first? It can be done, but it ain't easy. Now, I've never seen anyone hit a yoke with a ball peen hammer, and I'm not sure why you would, but I've seen plenty of rigs get dropped, knocked over, and banged up against anything and everything you can imagine. I've never, ever seen a yoke come loose from the tank or bend. Those yokes aren't exactly made of tin. Keep in mind that on a yoke, the connection is also inside the tank valve, maybe not as far as it is with a DIN connection, but it isn't just sitting on the surface, waiting for the slightest tap to knock it loose. I've had O-rings blow out while on a dive. While I may or may not have had to clean out my wetsuit when it happened, and I did want to make my way to the surface in a safe yet timely manner, I had plenty of air and plenty of time to do so. Now, I'm not saying you can't have a horrible, catastrophic failure of a yoke, but I'm saying the odds are very slim, and for OW diving (please note I'm not talking about cave or wreck diving) this isn't really a reason to decide to go DIN over yoke, in my opinion.

 

[fisherdvm]

Evidently the 'yoke' setup is satisfactory for 99% of divers since I've never seen a DIN setup being used so far.

I would say I have seen it about 1 out of every 20 divers. Many folks have din reg with yoke adapter, and you can't tell unless you looked closely.

I agree, yoke setups are quite fail proof most of the time, if it is pressurized. I just see the advantage in technical diving, or on a pony bottle, where one might chose to keep the valve turned off, and the system becomes depressurized (then you really don't want to bump the yoke valve, as it will let water into your reg).

 

[all4scuba05]

Im assuming DIN are rated to specific depths but what are yokes good for.

I've never read or heard that DIN or Yoke are rated to specific depths. Has anyone seen this in print somewhere?

 

[Burnsie]

Another big difference is that if you are using High Pressure steel tanks, you will 99% of the time use a DIN. The reason is that the yoke connection has trouble containing the 3500psi in a HP tank. DIN is more stable and less likely to be dislodged, but you will typically see yoke tanks in most dive resorts because that is the most popular "standard" setup for the average diver.