Ⅰ. Performance description:
    The inner and outer flow double-drum pressurized screen is suitable for the slit (mesh) preliminary sizing of headbox pressurized screen pulp. The power consumption and equipment floor area are 50% of those of single-drum pressurized screen.
Ⅱ. Installation Instructions
1. Pour the concrete foundation according to the drawing, preserve the foundation bolt holes and then cure the foundation.
    2. Move the pressurized screen to the concrete foundation and align it. Open the screen upper cover and level it with the frame gradienter on the housing flange machined plane before secondary grouting and fixing.
    3. The piping should make the pulp inlet pipe, pulp outlet pipe and scum pipe supported by the special pipe bracket other than the pressurized screen; otherwise, the load of screen will be increased. The pipe should not be subjected to any stress.
    4. After the horizontal piping of pulp inlet pipe, pulp outlet pipe and scum pipe, arrange the elbow vertically to exceed the height of pressurized screen and then arrange the pipes horizontal or in other directions to make the screen full of pulp.
    5. As the concentration of scum pipe pulp is higher than that of incoming pulp, to prevent clogging, connect 1-inch white water or clear water dilution pipe in the front of elbow and valve along the pulp flow at a 45°angle and make the dilution pipe water pressure 0.1 - 0.2MPa higher than that of incoming pulp.
6. Connect the sealing water pipe and clear water pipe to make the water pressure 0.1 - 0.2MPa higher than the pulp inlet pressure.