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NelesAce™ Basis Weight Control Valve

About NelesAce™ Basis Weight Control Valve

Basis weight control is one of the most critical applications for a valve in a paper machine and NelesAce™ was specificly built for it. The NelesAce™ control unit consists of the reliable R-series segment ball valve, complete with a high-resolution step-motor-driven rotary actuator, limit switches, and potentiometer.

Technical Specifications

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Description

Basis weight control is one of the most critical applications for a valve in a paper machine and NelesAce™ was specificly built for it. The NelesAce™ control unit consists of the reliable R-series segment ball valve, complete with a high-resolution step-motor-driven rotary actuator, limit switches, and potentiometer. This combination makes it possible to attain up to 28200 discrete repeatable positions through a 90 degree operation range to compensate for fluctuations in stock flow. Its unique feature to run valves with various step sizes, depending on error between actual and desired flow rate, makes it a superior element for basis weight control. Any error can be eliminated quickly and accurately without overshooting. This helps to reduce settling time during grade change.


Specifications
Design
V-port segment valve together with high resolution stepping motor
Size range
DN 50-250, flangeless / DN 50 – 500, flanged
Pressure classes
PN 25/40, ASME 150/300
Maximum ambient temperature
+50 °C
Features
  • Compatible with virtually all leading quality control systems
  • High rangeability and high resolution conformance
  • Assures consistent paper grade quality
  • Flexibility to operate on a variety of inputs
  • Applications:
    • Paper machines basis weight control
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