Pressurize combination valve overturns

The utility model discloses a pressurize combination valve overturns, including the valve body, this valve body is by the first cavity of branch partitions are divided into and the second cavity at its middle part, be provided with in this second cavity can reciprocating motion the case, be provided with the oil gas via hole of first cavity of intercommunication and second cavity on the division board, the tip of valve body is provided with the disk seat, be provided with on this disk seat with the oil gas passageway of first cavity intercommunication, being provided with the pressurize pouring weight in the first cavity, leaving the clearance between this pressurize pouring weight and the division board, this pressurize pouring weight middle part is provided with a cavity, and the end areal distribution of this cavity has the through -hole. Set up a cavity on the ballast piece in insurance validity, make pressurize pouring weight quality reduce, what make that the air permeability detects lets out leakage qu