3-piece replacement kit contains a new vent pipe Model No. 01058, pressure regulator Model No. 09978 (SKU 615481), and instruction book for selected Presto pressure cookers or canners. It replaces the existing vent pipe and petcock pressure control weight Model No. 85073 which are no longer available. Used on Presto Model No. 7, 7S, 7AV, 21, 21S, and 21AV.