Hose change - wrench size?

[HenrikBP]

I'm switching the hoses on my Apeks regulator to long hose primary, short hose octo, and was wondering about the wrench sizes necessary.

I have plenty of good quality (i.e. close to accurately sized) wrenches, both metric and standard. However, the nut sizes at the first stage is 14.2mm or 0.561" (9/16") and at the second stage 17.3mm or 0.684" (3/4").

Since Apeks is made in the UK, I would have thought metric sizes would be a good fit, but quite frankly it's not - certainly not good enough that I would trust that I wouldn't round of corners of the nut. As matter of fact, at the 1st stage, 9/16" is a much closer fit than a 15mm wrench.

So am I looking at really odd size nuts or am I dealing with 14mm and 17mm nuts that just "grew" due to chrome plating? Or would a tech use special wrenches?

Realistically I'll just pad the nut with electrical tape, which would then 1) protect the chrome and 2) tighten up the fit. Hopefully the nuts aren't torqued too hard. Where I can fit an adjustable I'll use that.

Wrt. special wrenches: the metal stub on the 2nd stages that receive the hose has a very narrow bit of hex flats on it. Much too narrow to fit a standard thickness wrench. I'm guessing that some sort of flat, stamped steel type wrench is what I'm looking for?

Any suggestions are appreciated.

Thanks

Henrik

 

[redacted]

They seem to come in a variety of sizes. I just use whatever wrench fits.

 

[diverrick]

I use my metric cresent wrench. It usually work fine

 

[scubatoys]

I use my metric cresent wrench. It usually work fine

Where did you get a metric Crescent wrench? All mine are imperial!

 

[JahJahwarrior]

Personally, when I have trouble, I use an imperial wrench and a metric hammer. Usually works. When I still have trouble, I use duct tape from Mars.

 

[Druid]

Apeks use Imperial threads and nuts, so your 9/16" and 3/4" spanners are the ones to use.

 

[Charlie99]

Where did you get a metric Crescent wrench? All mine are imperial!

I'll trade you a 20cm metric crescent wrench for your 8" imperial one.

 

[DennisW]

I would use an adjustable wrench. Makes things much easier. I have one in my save a dive kit.

 

[under water]

http://www.leisurepro.com/Prod/AQUSMT.html



or

http://scubatoys.com/store/detail.asp?product_id=ISTDIVERSTOOLKIT+

 

[Teamcasa]

Maybe they have gone back to Wentworth sizing?

Dave