Precise control valve – more compact and lightweight than ever

23 July 2021

Schubert & Salzer Control Systems believes it is able to offer the smallest sliding gate control valve with diaphragm actuator and integrated, digital positioner on the market. 

Many industrial processes require precise control of liquid, gaseous or vaporous media. Schubert & Salzer Control Systems has developed a compact, lightweight and energy-efficient solution for all areas of the process industry with its new type 8028 sliding gate valve. In addition, with a pneumatic 80mm diaphragm actuator and digital positioner, the control valve is fast, almost wear and maintenance-free as well as low-noise operation.

Thanks to its small size and a space-saving intermediate flange design, the valve is suited to use in confined spaces. At a nominal size of DN100, for example, the total dimension of the GS1 version is only 487mm. Its compact design also lowers energy consumption during operations and conserves resources in the manufacturing and logistics sectors.

The sliding gate technology used in the type valve controls the flow in milliseconds, whereby two slotted discs arranged vertically to the direction of flow slide over each another in a linear movement. The actuator must therefore only overcome the sliding friction between both discs. The required actuating force is 90% lower than for globe valves with the same nominal size at the same differential pressure.

Short actuator travels of just 6 to 9mm also help reduce wear from the packing and drive of the control valve. 

The type 8028 sliding gate valve is available in nominal sizes from 15 to 150mm. It controls media with temperatures from -60 to 350°C and can be used at ambient temperatures from -30 to 100°C. The maximum operating pressure is up to 40 bar, depending on the nominal size. 

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