Second-stage hose connection spanner size

[Chris Richardson]

Hi all. Exactly what is the correct A/F spanner size for the second-stage threaded hose connections that screw into the ports on a first-stage? The ones l have on my Aqua Lung Titan first-stage seem to differ between 14mm and 9/16". One even is 13.5mm (what is that in imperial size: 17/32" - crazy size! ) Does it differ from manufacturer to manufacturer or whether you're in Europe (metric) or the US? (imperial) I'm wanting to put a small tool kit together and as such am wanting to get some spanners (wrenches), Allen keys (8mm?), etc together in case of emergency, etc. Cheers

 

[fmerkel]

Unfortunately, there is no standard, unless you make sure you get the same brand or at least spanner size hose. ScubaPro even sees fit to make a proprietary hose end for the 2nd stage.

 

[Kupu]

I keep a couple small adjustable wrenches in my travel tool kit for that purpose (and any other needs), easier to deal with than keeping up with the various sized wrenches needed for my franken reg collection. Much simpler than attempting to standardize the hoses.
Imagine a scenario where you are on a dive trip and need to buy or borrow a replacement hose, Murphy's law would likely dictate that the hose you receive would need a different size spanner than what you carry.

 

[Caveeagle]

Get a slim jaw adjustable wrench like this..

https://www.amazon.com/gp/product/B00VBPY8Z6/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

 

[Chris Richardson]

Thanks everyone