Networks, systems and methods for recovering data messages from a market data stream and for building a book for a financial instrument are disclosed. Generally, a first public key of a first encryption type is placed in the certificate. By configuring a three-dimensional surface topography of the semiconductor layer, an enlargement of the electric contact surface is achieved, without enlarging the surface required for the semiconductor component and without the use of additional materials. The lower valve body preferably has an integral weir which, in conjunction with the resilient diaphragm, defines a fluid passage. The fluid matter may be liquid or gas.