Design considerations for dewatering press fabrics to permit selection of slot widths, Uhle box sizing and determination of vacuum requirements are discussed in this TIP. Recommended vacuum factors are provided for calculation of Uhle box vacuum capacity. System design considerations for piping, separation and vacuum equipment are included.

Note: This TIP revision included the partial deletion of press fabric showering recommendations. Showers are discussed in TIP 0404-61 "Paper Machine Shower Recommendations."