Segmented disc valves
Robust, durable and highly precise in expanded line sizes
Segmented disc valves by Schubert & Salzer
Functional principle of segmented disc valves
Segment disc valves incorporate a very simple yet effective design.
The central throttling element - a pair of segment discs that glide and seal against each other - are positioned in the valve body perpendicular to the flow direction. A fixed segment disc determines the Cv and flow characteristic. The fixed disc is engaged by a moving disc having the same geometry. Driven in a linear motion by a serrated actuator stem that sequentially increases or decreases the cross sectional area of the two segmented discs, these seating elements provide high rangeability with precise control.
The moving disc is spring loaded and this constant force allows bi-directional flow. The valve can also be installed in any direction and low differential pressures are nonproblematic.
This special design makes segment disc valves unique inasmuch as they combine precision control in extreme operating conditions with tight sealing and very low exposure to wear.
The advantages of segmented disc valve
Low actuation forces, compact design, low weight
Long service life, minimal wear, low operating costs
Robust design, high resistance to slightly contaminated media
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
Made for extreme operating conditions
Segmented disc valves are used in particularly demanding applications. In the production of limestone bricks and aerated concrete, they control, for example, contaminated transfer steam and condensate in the autoclaves.
Durable and robust
On account of their special design principle, segmented disc valves have proven to be extremely durable, even in operation with contaminated media.
High leak-tightness
The special construction of the segmented disc valves combines control accuracy even in extreme operating conditions with a high seal tightness.
Flow in both directions possible
Both discs are constantly pressed against each other by a spring assembly. This means that the flow direction is variable.
