Make sure you use the right o-ring on your valve!!!!

[Randy43068]

Apeks DIN regs take a 111 O-ring. A 112 will work but needs to be squished into the groove.

It's metric

 

[Sophist]

Hello, people!
I'm not a diver, unfortunately )), but I use a pony bottle with yoke valve. Could you tell me what is the correct o-ring number (see the red arrow at the picture bellow).
Thanks!
https://lh4.googleusercontent.com/-...AAAAAC90/INiKKOGmbag/s800/o-ring%20tank_1.jpg

 

[Peter69_56]

I have found in OZ that some yoke valves take 112 and some take 014 so I have both in my O ring cylinder as inevitably the tank I connect to (not mine) leak and I am fussy about leaking O rings. Went diving in Tonga a few weeks ago and of the 12 cylinders at the shop I replaced 8 O rings (I ran out).

DIN are usually 112 in OZ but I have had no issues to date except having one fall out when setting up one day. Never had a leak or failure.

O Ring Number

Description

Internal diameter (Inch)

Thickness (Inch)

Metric Int Dia

Metric Thick

014 Small Yoke Reg/K valve 0.489 0.07 12.42 1.78 015 Cylinder valve bonnet nut 0.551 0.07 14 1.78 111 Small DIN reg/valve 0.424 0.103 10.77 2.62 112 Standard K/DIN reg/valve 0.487 0.103 12.37 2.62