surface suction box 16 being placed at the suction roll 15 on the other side of wires 13 14 within the upper wire loop 13 so that water is removed from the web both by means of the suction roll 15 and by means of the suction box 16 the suction zone 25 of the suction roll 15 extends in the running direction of the web beyond the area of action of the suction box 16 whereby it is assured that the web adheres to the surface of the lower wire 14 the run of the web on the surface of the lower wire loop 14 is ensured by means of a suction box 30 the web is passed on the surface of the lower wire loop 14 further towards a press section and to further processing from between a suction roll 18 placed within the following belt felt or wire loop 21 and a curved surface suction box 19 placed on the opposite side of the suction roll 18 in the application shown in fig2 the upper wire loop 13 starts to turn upwards immediately after a suction roll 15 in which connection the web is prevented from starting to follow the upper wire 13 by means of a suction zone 26 of the suction roll 15 and the web is kept on the side of the lower wire loop 14 from here the web is passed downwards on the surface of the lower wire loop 14 towards a transfer onto the following press felt or equivalent 21 which transfer is accomplished by means of a transfer suction roll 18 and a curved surface suction box 19 by which suction box 19 the dry solids of.