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The production of drinking or process water, as well as the treatment of municipal and industrial sewage, involves a variety of demanding challenges. Valves from Schubert & Salzer offer optimal solutions for numerous applications in the field of water treatment, such as pressure control in membrane filtration, the precise aeration of aeration tanks or the disinfection of drinking water with ozone and chlorine.

You can find out which valves are best suited for the respective tasks and what advantages they offer in our new PDF brochure "Schubert & Salzer – Your Partner for Water Treatment".

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The pneumatically actuated stainless steel (1.4408, 1.4308) flanged valves Type 7032 are suitable for shutting off neutral and slightly aggressive liquids and gases quickly and safely. The previous nominal size range from 1/2" to 3" has been extended by the new nominal sizes 4", 5" and 6", which are designed for a nominal pressure of 232 psi (PN16). The type 7032 flange valves are suitable for media temperatures from -22 °F to 392°F and feature a compact design with a flange pattern in accordance with EN1092-1.

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Schubert & Salzer has developed the first three-way ball sector valve for the ideal control of the flow rate of liquids and gases. Due to the special design of the ball sector and the valve body, the three-way ball sector valve type 4080 enables high-precision control over a wide range and features about 20% higher and virtually identic Cv values in all flow directions.

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With minimum Cv values of 0.003 to 2 and a nominal pressure of 4641 psi, the new low flow valve type 7042 is ideal for the precise control of very small flow rates as well as in high-pressure applications. It can be used as a safe stop valve, especially for high pressures. The optionally integrated, digital positioner type 8049 is particularly easy to maintain thanks to its top-mounted installation. It is available with IO-Link, IIoT module and in an ATEX or FM version.

The low flow valve type 7042 has a valve body made of stainless steel barstock material, hardened valve spindles and a metallically sealing, replaceable seat seal made of hardened stainless steel or carbide to ensure maximum reliability and a long service life even in high-pressure applications. A special high-pressure packing ensures a high level of tightness, even with hydrogen, for example.

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Research and development are decisive factors for the quality of the control and on-off valves from Schubert & Salzer. With the new steam test bench, Schubert & Salzer Control Systems has now created options for its own product tests that go well beyond the industry standard. Longer and more intensive tests of different valve types and electronic components have been possible at the company's headquarters and production site in Ingolstadt, Germany since February 2023.

Outstanding research and development possibilities
All relevant properties of control and on-off valves – such as speed and precision or leak-tightness – can now be tested intensively under real conditions and further improved. Long-term tests and thermal load tests are also performed in-house. The test bench's steam boiler can produce up to 400 kilograms of saturated steam per hour.

As a result, industrial customers benefit from much more application-specific tests, because applications can be realistically simulated on the new test bench. The investment is thus a very good supplement to the water test bench – which was only modernised a few years ago – in the customer training centre at Schubert & Salzer Control Systems.

Highly efficient energy supply and air conditioning technology for the site
The steam test bench is integrated in a state-of-the-art power station with a combined heat and power plant. The configuration of the plants, which is perfectly tailored to the company's own needs, supplies the entire Schubert & Salzer works site in Ingolstadt with green electricity and thermal energy. The latter is used for heating or, converted by absorption refrigeration, for cooling for the air-conditioning of the premises. A stratified storage tank additionally increases the efficiency and enables the needs-based use of heating and cooling.

The sophisticated plant and building technology enables the valve specialists to further pursue their own climate protection goals and to equip the site for the future in terms of energy. For that reason, the combined heat and power plant is already prepared for the use of green hydrogen.