National Presto Pressure Cooker and Canner Over-Pressure Plug

The National Presto Pressure Cooker and Canner Over-Pressure Plug is an essential replacement safety component designed for pressure cookers and canners manufactured after 1977. It acts as an automatic secondary pressure relief mechanism to protect your appliance during high-pressure cooking and canning operations. Engineered for dependable performance, this plug automatically releases steam if the primary vent pipe becomes clogged and excess pressure cannot be discharged normally, maintaining safe cooking conditions.