Issue description: Attempting to make HDPE, PRC will accept liquid ethylene, will not accept oxygen from a tank, any pipe / machine. You can set the tank to output on any side, the oxygen disappears as soon as it goes in, like the tank was never full. PRC also says "Air" versus "Oxygen"? Gauge dropper also does not work.

Forge: forge-36.1.2
Mekanism: 1.16.5-10.0.21.448
Modpack: All the Mods 6 - To the Sky

Could you provide some pictures of your setup

Could you provide some pictures of your setup

From left to right, Electrolytic Separator to PRC with biofuel to made ethylene. PRC to rotary condensentrator to make liquid ethylene. RC to PRC. To the right is another Electrolytic Separator to get oxygen into the PRC, does not work.

Have you tried both output sides of the separator? (There is an "output 1" and "output 2" on the side config for gases) And is it set to auto eject with the PRC setup to access gases from that side. Also I am still not quite sure what you mean by it showing "air". (Joining our discord may help get quicker responses/suggestions on what the issue is)