When using fluid pipes from GregTech, instead of Create, the steam inputs don't say they have any fluid inside or give any info on the fluid. Using an in-game NBT editor shows that the water in the GT fluid pipes do have temperature & pressure data, and the steam inputs show 0mB of minecraft:empty with all of the properties of the input water. Furthermore, the steam inputs produce infinite flow after this.
When using fluid pipes from GregTech, instead of Create, the steam inputs don't say they have any fluid inside or give any info on the fluid. Using an in-game NBT editor shows that the water in the GT fluid pipes do have temperature & pressure data, and the steam inputs show 0mB of minecraft:empty with all of the properties of the input water. Furthermore, the steam inputs produce infinite flow after this.