Sorters should prevent the flow of gases directionally.
Presently, there is no way to prevent the flow of gases without disconnecting them all together.
I would like to be able to whitelist oxygen or hydrogen or shut it off completely so that people can't accidentally or on purpose take from it.
This would allow for the creation of h2 gas stations by shutting off the pump after a certain amount of time. Yeah, we can kinda do this with connectors, but people can always just reconnect and repeat the process.