# Check valve

Pyanodons item · internal name `py-check-valve` · stack size 10 · first craftable in tier 0 (Automation science pack, [tier 0](https://factorio.kalzumeus.com/tier/0.md))
HTML page: https://factorio.kalzumeus.com/item/py-check-valve/

## Produced by (1 recipes)

### Check valve (`py-check-valve`)

- 2 s · tier 0
- Ingredients: 1 × [Steel plate](https://factorio.kalzumeus.com/item/steel-plate.md), 1 × [Small parts](https://factorio.kalzumeus.com/item/small-parts-01.md), 1 × [Pipe](https://factorio.kalzumeus.com/item/pipe.md)
- Results: 1 × [Check valve](https://factorio.kalzumeus.com/item/py-check-valve.md)
- Made in: Burner assembling machine MK 01, Burner assembling machine MK 02, Burner assembling machine MK 03, Automated factory MK 01, Automated factory MK 02, Automated factory MK 03, Automated factory MK 04, Character, Character (flying), Mutagenic infusion,  (flying)
- Unlocked by: [Fluid handling](https://factorio.kalzumeus.com/tech/fluid-handling.md)

## Used in (1 recipes)

- Hydraulic systems MK02 (`hydraulic-system-mk02`, tier 7) → [Hydraulic systems MK02](https://factorio.kalzumeus.com/item/hydraulic-system-mk02.md)