Brochure

Pulp from cooking always contains some unwanted solid material. Some of the fibrous material may not be completely in the form of
individual fibers. The main purpose of the pulp screening process is to separate harmful impurities from pulp with minimal fiber loss, and at
an acceptable cost level.
Bark, sand, shives, and rocks are typically found within the cooked chips and must be removed. It is important for these impurities to be
removed from the process stream as it can have negative effects on end product quality, may damage downstream process equipment, and
may cause operational problems.
Brown Stock Rejects
Product Solutions
Fisher
®
Pulp and Paper Solutions | 15
Pulping
n WASH OUT PROTECTION Reverse ow installation ensures erosive slurries remain downstream of valve body
and trim.
n MAXIMUM FLOW CONTROL V-notch ball contouring provides modied equal percent characteristic for maximum
ow control.
n VALVE BODY PROTECTION Hard, wear-resistant trim materials fully protect valve body, shaft, and bearings.
n HARDENED MATERIALS High Chrome Iron (HCI) and/or Partially Stabilized Zirconia (PSZ) MATERIAL protect
body internals.
n EASE OF MAINTENANCE Valve body design allows for easy replacement of trim and valve internals.
n MINIMIZED IMPINGEMENT Flow ring matched to pipe bore size minimizes impingement on pipe wall.
Fisher V150S Slurry Vee-Ball control valve, 2052 actuator, and FIELDVUE DVC6200
Pulping