DYNAMIC MIXING AND CONTROL VALVE
TYPE DGM

Fully automated control element for the flow control of gases. Exact mixing ratio as the second gas is fed in via the defined orifice cross section opening of the perforated basket element which may be adjusted by the stroke movement of the control device. Several mixing valves may be arranged in line for a multi-stage mixture of several gases.

DGM
 
Industrial boilers, Biogas & Landfill gas, Glass trough heating, Steelworks
Application areas
  • Combustion processes in furnaces and boilers
  • Feed-in into the natural gas distribution system, e.g. as biomethane
  • Thermal processes for exact temperature control
Nominal size: DN 25 to DN 500
Operating pressure: PN 6 – PN 25
Flow control range: 1 : 30
Mixing ratio: 0 : 100
Operating temperature: max. + 200°C

Advantages
  • Compact design
  • Precise control of the gas injection for exact increase of the calorific value.
  • Reliable media shut-off due to a robust plug sealing system
  • For use in high process operating temperatures of up to 200°C
Function
The gases to be mixed (main and injection gas/es) are fed to the gas mixer. The dynamic gas mixer DGM controls the amount of the injection gas by means of the defined orifice cross section opening of the perforated basket element which may be adjusted by the stroke movement of the control device. This adjusts precisely the mixing ratio, allowing the optimum gas mixture over the entire control range. The closed-loop actuator is controlled via a positioner as demand requires.

Technical features
Valve body: Extremely compact welded steel construction with two entry flanges and one discharge flange
Sealing system: Spindle sealing by means of spring-force supported elastic sealing rings.
Elastic sealing of the control plug
Actuator type:
  • Integrated pneumatic, double-acting KÜHME plug control actuator.
  • Optionally: electrical actuator
Process connection: Flange connection in acc. to DIN/EN or ANSI