Double Cone Valve DFG-ST

The double cone valve is a special design with a structural adaptation of the DFG-FH double flap valve.

Instead of the usual flap gates, two alternately opening cones are fitted in the housing of the double cone valve. The advantage of this design is the highly reliable sealing of difficult bulk materials in differential pressures.

It was developed for dust discharge from the centrifugal cyclone of a sintering plant, an environment with a high dust load. The medium is highly abrasive sintered ash, which requires specific material adaptation of the contacted parts.

Cone and seat are cast from NiHard, with a minimum hardness of 620 Brinell. The fully enclosed housing of welded construction ensures gas- and dust-tight discharge to atmosphere. For optimum operational monitoring and maintenance, the double cone valve has large inspection openings.

The electropneumatic actuator is equipped with an inductive limit switch in the closed position of the cone.

ABOUT THE BULK MATERIAL:

Sintered ash (highly abrasive)

– Bulk density 600 – 1700 kg/m³
– Pressure (minus) -100 mbarg

• Exchange against rotary feeders possible
• Fully enclosed housing, dust and gas tight to atmosphere
• Simple operation monitoring without removing the valve
• Easy replacement of spare parts in installed condition
• Cone and seat particularly wear-resistant due to NiHard

Technical data without guarantee. Customised design (voltage, power, speed, protection class, etc.) can be implemented.