Using an old pressure cooker without a safety valve is not safe and strongly discouraged. The safety valve is a crucial component of a pressure cooker that helps regulate pressure inside the pot. It releases excess steam to prevent the pressure from building up to dangerous levels.
Pressure cookers work by trapping steam generated during cooking, which raises the internal pressure. If there is no safety valve or if the safety valve is faulty, there is a risk of the pressure cooker exploding due to the excessive pressure buildup. This can result in serious accidents, causing burns, injuries, and damage to property.
If you have an old pressure cooker missing its safety valve or if the safety valve is no longer functioning properly, it is best not to use it until the valve is replaced or the pressure cooker is properly repaired by a qualified professional. Always prioritize safety when dealing with pressure cookers or any other cooking appliances that involve high pressure and heat.