I'm not familliar with Apex but some manufacturers like scubapro make both 240 and 300 bar din adapters. If you get a 240 bar adapter it still won't work on 300 bar din tank valves.
I have a 300 bar din valve and use an adapter on occasion to work with a yoke tank, but my LDS swaps customers back and forth for free so when I go on trips I have him swap me.
I havn't had any trouble with head banging on the regs when I use the din to yoke adapter.
Almost all of our tanks are modular valves yoke / 240 bar din that way I unscrew the adapter from the valve to use din and the other guys screw them back in to use yoke. Modular valves can be added to most tanks for about $60. PST includes these valves as standard on their tanks.
Note 300 bar din regs work with both 240 and 300 bar tanks but 240 bar reg only work with 240 bar tanks and the yoke inserts only work with 240 bar valves designed to accept them.
I have a 300 bar din valve and use an adapter on occasion to work with a yoke tank, but my LDS swaps customers back and forth for free so when I go on trips I have him swap me.
I havn't had any trouble with head banging on the regs when I use the din to yoke adapter.
Almost all of our tanks are modular valves yoke / 240 bar din that way I unscrew the adapter from the valve to use din and the other guys screw them back in to use yoke. Modular valves can be added to most tanks for about $60. PST includes these valves as standard on their tanks.
Note 300 bar din regs work with both 240 and 300 bar tanks but 240 bar reg only work with 240 bar tanks and the yoke inserts only work with 240 bar valves designed to accept them.