Fixed seat shut-off valve and process for assembling the same

A fixed seat shut-off valve, comprising:

• a valve body configured to receive a closure member, comprising at least one valve inlet and at least one valve outlet extending along respective longitudinal axes, and a top-entry opening;
• the closure member received in the valve body and movable relative to the valve body between a valve closing position and a valve opening position;
• at least one removable sealing seat for the closure member, comprising a sealing region configured to sealingly cooperate with the closure member, the sealing region being disposed on a front face of the at least one removable sealing seat, the at least one removable sealing seat being fixedly received at least partially in a respective receiving seat formed in the valve body at at least one of the at least one valve inlet or at least one valve outlet;
• and
• a sealing element disposed between the at least one removable sealing seat and the respective receiving seat formed in the valve body;
• wherein the at least one removable sealing seat is fastened in the respective receiving seat via one or more fasteners which are axially interposed between the at least one removable sealing seat and shoulders formed in the valve body and abut at least axially against first abutment regions defined on the at least one removable sealing seat and against second abutment regions defined on the shoulders, wherein the shoulders formed in the valve body are defined in front of the at least one removable sealing seat on a same side as the front face of the at least one removable sealing seat.