• Basis weight valve A381
  • Basis weight valve A381
  • Basis weight valve A381
  • Basis weight valve A381
  • Basis weight valve A381
  • Basis weight valve A381
  • Basis weight valve A381
  • Basis weight valve A381

Basis weight valve A381

Basis weight valve A381 for controlling of paper web density on the reel of paper/board machine.

The A381 valve is designed to regulate the basis weight of the paper web on the paper/board machine reel.

The actuating mechanism is based on a segment valve with a control characteristic close to linear. The valve comes with a reducer gear, a reversible electric drive and an absolute position sensor. The position transmitter is mounted directly on the drive shaft of the control segment, thus eliminating the influence of gear and actuator backlash on the accuracy of the valve positioning.

The control unit performs the functions of indication of current valve position, manual and automatic (under control of operator workstation) opening value setting as well as service and diagnostic functions.

Specifications:
  • Valve type ball segment, flangeless
  • Pipeline DN DN80…200
  • Rotation angle 90°
  • Positioning accuracy 0,1%
  • Communication RS485
  • Analog interface 0-5 / 0-20 / 4-20 / 4-24 mA