Valve assembly adopting rubber-free valve body

The utility model discloses a valve assembly adopting a rubber-free valve body, and belongs to the technical field of reciprocating pump valve assemblies. Comprising a valve body, rubber and a valve seat, the valve seat and the rubber are of a vulcanized integrated structure, the valve seat is of a penetrating type annular structure, a spherical or conical working face structure matched with the valve body is arranged at the upper end of the valve seat, and a sealing groove is formed in the lower end of the outer circle of the valve seat. The rubber covers the working surface of the upper end of the valve seat and the outer surface of the upper end of the valve seat; in order to solve the problem that a rubber sheet of a traditional valve body assembly is prone to damage, the rubber sheet and the valve seat are of a vulcanized integrated structure, a traditional rubber sheet installation structure is omitted, a streamline S-shaped structure is adopted in shape design, stress concentration generated by heat tr