Tank checker help

[gopbroek]

A friend sent me a picture of a tank test gauge for a yoke fitting that has a pressure operated coupler. Below is a picture, as described to me it self seals to the tank once pressure is applied. I suspect part of the input pressure is bled to a piston operated coupler. On the side there is a spring loaded purge button. The gauge is manufactured by Instrutek (Mexico gauge manufacture) but I do not know who makes the coupling device. Does anyone have any info on this?

 

[northernone]

I don't know, but I too want one!

 

[guruboy]

I'm not sure what your question is, but that looks like a pneumatic pressure checker.

Pneumatic Pressure Checker

 

[northernone]

First row, third column?

Underwater Supply Valves

I've seen them on a few station's fill whips.

 

[Scared Silly]

They are nice, but sometimes can be a PITA with beat up yoke valves.

 

[herman]

I really dislike both the tester and the fill whip, darn things will bite you hard if you are not careful.

 

[Scuba J7]

I love those on fill whips, I think Global makes a version, but they don't have an online catalogue.
Dive Shop Supplies - Products - Global Scuba Mfg. of Texas

Edit: I stand corrected, I found their downloadable catalogue but did not see it in there.