Segmented Disc Valves

Segmented disc valves offer a perfect and variable control with high precision over a wide flow range. Due to the robust design and the bi-directional flow capability, segmented 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. An ingeniously simple but effective valve design!

Design principle of segmented disc valves

Segmented disc valves work on a very simple but effective principle.

The central throttling element – 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.The movable segment disc is constantly pressed onto the fixed disc by a spring assembly regardless of the prevailing pressure difference. 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.

The advantages of segmented disc valve

• Long service life, minimal wear, low operating costs
• Robust design, high resistance to slightly contaminated media
• Low actuation forces, compact design, low weight
• Bi-directional flow
• Precise control
• High KVS values
• Low noise emission and non-sensitive to cavitation
• High degree of tightness, low leakage due to the functional principle
• Reduced energy consumption and low insulation loss