HP steel tanks and yoke regs?

[mksmith713]

OK folks, I'll be posting this under several topics so I can get more opinions.

I wanted to know if anyone using HP steel tanks ever had any problems using 1st stage yoke style regs rated to 3000 and/or 232 BAR.
I'm looking at a couple of steel 120's rated to 3442 though my regs are clearly marked 3000 for one set and 232 BAR on the other set.

 

[Underwater Ogre]

Nope...no problems here. I have been doing exactly what you describe. I will be interested to see what the experts say.

U/O

 

[Stu S.]

We were using 232 bar yoke regulators with the DIN / yoke convertable tank valve. Tanks were 3442 psi. There was no problem with the yoke itself. The "converter" plugs that screw into the tank valves are not robust, and got bent out of shape after a few years of use. We had trouble with leaks this Summer, and I converted our regulators to DIN.

I also could have bought five new plugs and repeated the process. A standard yoke valve would probably hold up better than those converters, but 3442 is pushing the limit of that little o-ring.

Good luck with it.

 

[ZzzKing]

I usually have my LDS fill to about 3300 psi. They cool back to around 3000 or so. It takes them quite a while to pump them full enough to cool back to 3442 and I don't usually have the patience to wait that long.

 

[mustang_5l]

I've used yoke fitting on HP tanks without any issues however I've switched to din fittings now.

 

[phoneman68]

I started with 2 Low Pressure steel 85's (yoke) and a couple of years ago I upgraded to 2 steel HP120's (yoke) Have been using them with an old Dacor first stage and an Aqualung Titan LX Reg and have never had a prboblem with either of them

 

[fisheater]

No issues here (though I just switched to DIN).

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[JOSHINBOS]

I thought that 3442 is the max working pressure of the tanks??? I know my lds does my HP 80's to 3000 and no more even though im 3442 tank rated only difference is I have a 3000 DIN with a Yoke adapter.

 

[Scared Silly]

A modern reg with yoke should not have a problem with the higher pressure. Some of the older regs which have a thinner yoke may. There is a good chance that those might not even fit on the valve.

I thought that 3442 is the max working pressure of the tanks??? I know my lds does my HP 80's to 3000 and no more even though im 3442 tank rated only difference is I have a 3000 DIN with a Yoke adapter.

A modern HP exempt cylinder does have working pressure of 3442 psi (234 bar). There is no good reason for the shop not to fully fill them unless their compressor is only good to 3000psi. Understand that at 3000psi the HP80 is basically a MP70.

 

[walke121]

Ive seen numerous o-rings go with yoke connections when a tank has 3500psi in it. But most of the time when you get a fill you arent going to get the 3500 that your tank can hold. Never seen any issues with the reg's just the o-rings