WITT gas mixers – precise and reliable. Ranging from small, specialised mixers to large-scale systems. ●

Always the right gas mixture WITT offers high-quality gas mixing and gas metering systems for 2 or more gases, ideal for high and fluctuating flows. The choice is yours: depending on requirements WITT gas mixers are available in various versions for almost all technical gases and different performance ranges. Sophisticated mechanical or state-of-the-art electronic gas mixing systems ensure precision and process reliability. On request, the gas mixers can be operated conveniently via the Internet, your Intranet, or mobile devices. Of course, the gas mixers can also be combined with other WITT...

Key benefits of choosing gas mixers: › Quality / Homogeneity The highest mixture quality. As a user you always receive absolutely homogeneous mixtures. This uniformity provides optimum process reliability. › Flexibility Mix the gas you need, when and where you need it. Gas mixers offer the highest possible flexibility for required mixing ratios, gas volumes and application location. Are you operating a system with variable gas compositions? That is not a problem with gas mixers. You can change the gas mixture setting at any time to gain just the right gas mixture in a matter of seconds. Even...

The right mixer for every application WITT gas mixers are not only impressive owing to their precision and reliability – also for their scope, ranging from small, specialised mixers to large-scale systems. No matter what your application – with gas mixers from WITT you are choosing state-of-the-art quality and safety of your gas supply. › Metalworking In industrial metal processing, whether it be in automotive, rail rolling-stock, ship-building or in the steel industry, the quality of the gas supply is of crucial importance for precise welding, cutting and smelting processes. WITT gas mixers...

› Beverage industry To keep beer fresh, the drink is frequently processed in an inert gas - CO2, nitrogen or a mixture of both. WITT gas mixers provide the required mixing gas in a flexible mixing ratio between 0 and 100%. When it comes to dispensing beer, WITT gas mixers supply the necessary gas pressure and prevent excessive carbonisation of the drink in larger installations. › Glass working State-of-the-art control systems from WITT for the exact composition of fuel gas/oxygen mixtures enable the necessary precision and a constant supply to burner systems in glass processing. Exact gas mixing...

WITT mixing technologies Mechanic , electronic, pneumatic or via mass flow – different gas mixing technologies are availabe for your application. › Gas mixers with mechanical mixing valve Mechanical gas mixers with mixing valves form the cornerstone of WITT gas mixing technology, having proven their merit in countless installations over many decades. Mixtures can be produced reliably from almost all gases using this process – precisely and with longterm stability. A proportional mixing valve is generally used for 2-gas mixtures. The valve has 2 gas inlets and an outlet for the mixing gas. The...

› Gas mixers with electrical mixing valve Gas mixers with electrical mixing valves are suitable for practically all popular gases and a large number of applications. Proportional or individual mixing valves – depending on whether 2 or more gases are mixed – form the core of this mixing process, similar to the mechanical mixing process. The functioning of the mixing valves is ingeniously simple: a moving piston in conjunction with different orifices controls the flow rate of the gases, thereby producing the desired mixture. The technical genius of the WITT gas mixer lies in the high-quality materials...

WITT mixing technologies › Gas mixer with pneumatic flow rate controller Besides conventional mixing valves, WITT utilises a further, innovative gas mixing process in its gas mixers. With this patented design, the continuous mixing occurs purely pneumatically via a porous body. Depending on the required mixing ratio, a differently sized surface of the sintered body is made available to each individual gas. The process is essentially unaffected by fluctuations in gas pressure and extraction volume. Nor do you need a power supply or pressure vessel for the mixing gas. As a result, users gain a...

› Gas mixer with flow rate controllers (Mass Flow Controller = MFC) WITT also provides gas mixers with MFC technology for maximum precision in the gas mixing. These MFC mixers produce gas mixtures by regulating the mass flow of each individual gas involved. A mass flow controller is used for each gas. The volumetric flow rate of the gases is logged in the relevant mass flow controller by means of thermal conductivity and then regulated. The volumetric flow rates of the individual gases are then combined into a mixture. The fully electronic control optimises the mass flow rate of the gases, compensates...

Safety components and options On request, WITT gas mixers can be optimised to meet your requirements, numerous options and components available. › Constant pressure control WITT gas mixers with mixing valves usually have a constant pressure regulation for the various input pressures. The input pressures are reduced to the required values and compensated for by WITT dome-loaded pressure regulators. Even a differential pressure of the individual gases of up to 3 barg is possible. If the inlet pressure of a gas drops, for example, the pressure of the second gas is automatically reduced as well....

› Tank Corresponding to the gas mixing systems, WITT offers pressure vessels for various pressure ranges and volumes from 20 to 3000 litres on request. The pressure vessels are either made from steel or stainless steel and are painted or powder-coated and equipped with accessories on request. For tanks up to 250 litres, a pre-assembly of mixer and tank is possible. › Gas fittings Depending on the model and application, high-quality gas fittings made by WITT are integrated into gas mixing systems to increase safety. Thus, for example, gas non-return valves prevent unwanted gas backflow and undesired...