The gasketed plate heat exchangers of the series AV and AX are constituted by a complete and flexible range of plates of various sizes to best resolve each individual problem of heat exchange with a solution targeted and calculated “tailored” to the client. Using the most advanced technologies it is possible to get the optimized solution for the specific thermal problem that the customer has to solve. The heat exchangers are constituted by a pack of heat exchange plates of material suitable with the fluids that need to exchange heat, held together by two frame plates and the necessary boltings.The plates constitute two channels, one for the hot fluid which transfers heat to the other, and one for the cold one that receives it. The tightness of the channels is ensured by the gaskets, in different materials depending on the fluids on duty, which once positioned on the plates create the channels for the primary and the secondary circuit.The gasketed heat exchanger presents the main advantage of flexibility, since it can be disassembled into its individual components. This ensures more efficiency in the operations of cleaning and maintenance, in addition to making flexible thermal processes to which it is subjected with the possibility of expansion of the exchanging surface by means of the simple addition of plates inside the package.