Replacement for Presto pressure cookers and canners Pressure Regulator (weight),the Air Vent/Cover Lock,and the Overpressure Plug (release).Replacing worn or damaged parts prevents steam leaks,maintains consistent pressure,and guarantees perfect cooking results every time. A gentle rocking motion of the pressure regulator indicates that proper cooking pressure is being maintained. This also replaces Part No. 09913, 50294, 50626 Replacement for Presto Pressure Regulator/Jiggler for Pressure Canners and Cookers. #09978. Compatible Products 01/CA16A - 16-Quart Pressure Canner 01/CA16H - 16-Quart Pressure Canner 01/CA21A - 21-Quart Pressure Canner 01/CA21H - 21-Quart Pressure Canner 01/CAA12H - 12-Quart Pressure Canner 01/CAA20H - 20-Quart Pressure Canner 01/CG22 - 22-Quart Pressure Canner 01/PCA4 - 4-Quart Aluminum Pressure Cooker 01/PCA6 - 6-Quart Aluminum Pressure Cooker 01/PCC4 - 4-Quart Cast Aluminum Pressure Cooker 01/PCC4A - 4-Quart Cast Aluminum Pressure Cooker 01/PCC4D - 4-Quart Cast Aluminum Pressure Cooker 01/PCC4H - 4-Quart Cast Aluminum Pressure Cooker 01/PCC6 - 6-Quart Cast Aluminum Pressure Cooker 01/PCC6A - 6-Quart Cast Aluminum Pressure Cooker 01/PCC6AD - 6-Quart Pressure Cooker 01/PCC6D - 6-Quart Pressure Cooker 01/PCC6H - 6-Quart Cast Aluminum Pressure Cooker 01/PCC6HD - 6-Quart Pressure Cooker 01/PCD4 - 4-Quart Pressure Cooker 01/PCD4H - 4-Quart Pressure Cooker 01/PCE4 - 4-Quart Pressure Cooker 01/PCE4A - 4-Quart Pressure Cooker 01/PCE4H - 4-Quart Pressure Cooker 01/PCE6 - 6-Quart Pressure Cooker 01/PCE6A - 6-Quart Pressure Cooker 01/PCE6H - 6-Quart Pressure Cooker 01/PCS4 - 4-Quart Stainless Steel Pressure Cooker 01/PCS6 - 6-Quart Stainless Steel Pressure Cooker 01/PS4 - 4-Quart Pressure Cooker 01/PS6 - 6-Quart Stainless Steel Pressure Cooker 0121002 - 4-Quart Aluminum Pressure Cooker 0121004 - 4-Quart Aluminum Pressure Cooker 0122102 - 4-Quart Pressure Cooker 0122104 - 4-Quart Pressure Cooker 0124001 - 4-Quart Pressure Cooker 0124002 - 4-Quart Pressure Cooker 0124102 - 4-Quart Aluminum Pressure Cooker 0124104 - 4-Quart Aluminum Pressure Cooker 0125002 - 6-Quart Aluminum Pressure Cooker 0125004 - 6-Quart Aluminum Pressure Cooker 0125005 - 6-Quart Aluminum Pressure Cooker 0126002 - 6-Quart Pressure Cooker 0126102 - 6-Quart Pressure Cooker 0126104 - 6-Quart Pressure Cooker 0126105 - 6-Quart Pressure Cooker 0126306 - 6-Quart Pressure Cooker 0126407 - 6-Quart Aluminum Pressure Cooker 0126408 - 6-Quart Aluminum Pressure Cooker 0126410 - 6-Quart Aluminum Pressure Cooke