Ninja OS401 how to release pressure naturally
When pressure cooking is complete and the recipe does not call for a quick release.
Steps
WARNING
Serious burns can result from the steam and hot foods inside the inner pot. ALWAYS keep hands, face, and other body parts away from the pressure release valve prior to or during pressure release and when removing the pressure lid after cooking.
Marked WARNING by the manufacturer Source: Important Safeguards: item 44, p. 4
- Let the unit cool; steam releases from it naturally as it cools. The unit switches to Keep Warm mode during this time.
- Press the KEEP WARM button if you want to turn Keep Warm mode off.
- Check that the red float valve has dropped, which shows the natural pressure release is complete.
- To switch to a quick release at any time during the natural release, turn the pressure release valve to the VENT position. See Release pressure with the quick release.
Source: Natural Pressure Release vs. Quick Pressure Release Source: Natural Pressure Release vs. Quick Pressure Release, p. 14
Used for
Other OS401 procedures
- How to release pressure with the quick releaseOnly when the recipe calls for it, after pressure cooking is complete and the KEEP WARM light is on.
- How to install the pressure lidBefore using the Pressure Cook, Steam, Sous Vide, Slow Cook or Yogurt function.
- How to remove the pressure lidAfter the pressure has been released and the float valve has dropped.
- How to pressure cookWhen a recipe uses the Pressure Cook function.
- How to run a first Pressure Cook test with waterBefore first use. The guide recommends an initial run to get familiar with pressure cooking.
- How to remove and reinstall the silicone ringTo wash the ring after use or to replace it.
- How to remove and clean the anti-clog capAfter every use, and when checking the valves before cooking.
- How to install and remove the condensation collectorBefore first use, and to hand-wash the collector after each use.
- How to clean the unit after useAfter every use.
Sources
- OS401 Owner's Guide: Foodi 10-in-1 8-QT XL Pressure Cooker. SharkNinja Operating LLC. Document OS401_IB, revision MP_REV_Mv12, 25 pages, en. ninjakitchen.com. Listed on the manufacturer's support page. Retrieved 13 November 2026.
Page numbers are the numbers printed in the manual. Where this page and the manual differ, follow the manual.