DIN outlet cylinder valve for 232 bar scuba rebreather supply gas cylinder allowing connection of rebreather regulator to one valve and open circuit regulator on second outlet
<a href="//commons.wikimedia.org/wiki/User:Pbsouthwood" title="User:Pbsouthwood">Pbsouthwood</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>