Create: Pressure & Pneumatics - NeoForge Mod for 1.21.1

Create: Pressure & Pneumatics adds a simple compressed air network: compressors generate pressure when powered, air tanks buffer it, and pneumatic pipes share pressure between every connected node.
Pneumatic machines: the piston consumes air on redstone pulses and shoves entities in its facing direction; the press spends air to flatten iron, copper, or gold ingots into pressed plates; the item mover uses air to pull one item at a time from the block behind it into the block it faces.
The pressure gauge item reads out live pressure from any pneumatic block; sneaking with an empty hand on compressors/tanks also shows the stored pressure.
Overpressure matters: components slowly bleed off excess above their capacity and violently explode if they climb past their safety ceiling, so pair compressors with tanks and pipes to avoid bottlenecks.
Crafting: blocks are built from familiar materials (iron, redstone, copper, hopper/chest for movers, an anvil for the press) and pipes craft in batches; pressed plates also have a simple manual recipe if you want them early.
Limits & notes: the piston only moves entities (not blocks), the press only processes ingots listed above, and pressure sharing is a straightforward equalization between neighbors without directional loss. Use the creative tab “Create: Pressure & Pneumatics” to grab every part quickly.