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Precise control with segment disc valves
January 2018, Valves, Actuators & Pump Control


Segment disc valves work on a very simple but effective principle. The central throttling elements – the segment discs that glide and seal against each other – are positioned in the valve body perpendicular to the flow direction. On a non-rotatable aligned segment disc whose geometry determines the flow rate and characteristic, a movable disc having the same number of segments is shifted by a tangentially engaging rod in such a way that the free cross-sectional area of the segments changes continuously.

Regardless of the prevailing pressure difference, a spring assembly constantly presses the movable disc onto the fixed disc. As a result, the flow direction is variable and the valve can be installed in any position.

This special design makes segment disk valves one of the few valves that combine control precision even in extreme operating conditions with a high seal tightness and very low exposure to wear.

Segment disc valves and segment disc orifices

Perfect and variable control with high precision over a wide flow range is made possible by the segment disc valves from Schubert & Salzer. Due to the robust design and the reciprocal flow direction, segment disc valves are suitable for fluids as well as vapours, even if these are contaminated by particles. The wide range of applications includes areas such as building materials, chemical and power plants, pipelines, water supply and disposal, as well as shipbuilding. This ingeniously simple but effective valve design is available up to nominal size DN800.

For more information contact Kamil Maharaj, Macsteel Fluid Control, +27 (0)31 581 7800, kamil.maharaj@macfluid.co.za, www.macsteel.co.za


Credit(s)
Supplied By: Macsteel Fluid Control
Tel: +27 11 383 4000
Fax: 086 644 1320
Email: rowan.blomquist@macfluid.co.za
www: www.macsteel.co.za
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Further reading:

  • Control of abrasive slurries
    October 2018, Bearing Man Group t/a BMG, Valves, Actuators & Pump Control
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  • Schubert & Salzer stabilises paper production
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    The Austrian company, Grünewald Paper, recently modernised its process control to improve profitability. Thanks to a new control system and a grammage-weight control valve, the company’s throughput and ...
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    Thanks to its versatility and flexibility, Festo’s quarter-turn actuator DFPD can be used in a variety of applications. Its modern, simple and compact design impresses whether it is used with ball valves, ...
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    May 2018, Macsteel Fluid Control, Valves, Actuators & Pump Control
    Belgium-based PVS Chemicals produces extremely pure chemicals for use in the semiconductor industry. One of the company’s outstanding innovations is the production of ultra-pure sulphuric acid. As the ...
  • Test unit for control valves
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    Although plant designers tend to treat them as ‘necessary evils’, it is obvious that control valves play a key role in process quality and reliability. Extreme care must be taken to avoid costly premature ...
  • Optimised pump ­performance
    May 2018, SKF South Africa, Valves, Actuators & Pump Control
    Ignoring pumps is a risk because when these components break down, or run below optimum efficiency, the whole process suffers. Manufacturing and process companies are always under cost pressure, making ...
  • Sealed bearings eliminate common failures in triple offset valves
    April 2018, Valve & Automation, Valves, Actuators & Pump Control
    Bearing failures are among the highest root causes of failure in triple offset valves (TOV) for tight shutoff applications. This issue is directly attributed to the need to have metal bearings with very ...

 
 
         
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