Delta-Elektrogas VF VFT VFH Butterfly Valves

Efficient combustion requires a predictable and stable flow of fuel and air. The VF series butterfly valves serve as the modulating element within gas trains, operating by rotating a disc within the valve body to increase or decrease the flow area. Unlike standard shut-off valves, these units are specifically calibrated for throttling applications, providing the incremental control necessary for sophisticated burner management systems.

The technical strength of the Delta-Elektrogas VF VFT VFH Butterfly Valves lies in their modularity and material specialized for specific conditions. The VFT version is specifically designed for systems utilizing pre-heated combustion air up to 200°C, while the VFH model is built to withstand even higher temperatures up to 450°C. Each valve features a double-eccentric or centric design (depending on the model) to minimize friction and torque, extending the life of the connected actuator. Constructed from die-cast aluminum or cast iron, these valves ensure structural integrity even under the thermal stress of heavy industrial furnaces.

Description

The Delta-Elektrogas VF VFT VFH Butterfly Valves are high-precision flow control solutions designed for regulating gas and air in combustion processes. Whether you need manual adjustment or automated modulation via an electric actuator, these valves provide a robust and reliable interface to maintain optimal fuel-to-air ratios in industrial heating systems.

Specifications

  • Medium: Natural gas, LPG, Town gas, and non-aggressive gases (Air)
  • Maximum Operating Pressure: 500 mbar (50 kPa)
  • Rotation Angle: 0° to 90°
  • Body Material: Die-cast aluminum alloy (VF/VFT) or Cast Iron (VFH)
  • Disc Material: Stainless steel or Aluminum
  • Operating Temperature (VF): -15°C to +60°C
  • Operating Temperature (VFT): Up to +200°C
  • Operating Temperature (VFH): Up to +450°C

Features

  • Precision Throttling Control: Designed for fine-tuning gas and air flow to achieve stoichiometric combustion.
  • Temperature Versatility: Multiple models (VF, VFT, VFH) available to handle ambient to high-temperature air up to 450°C.
  • Compact Wafer Design: Minimal face-to-face dimensions allow for easy integration into existing gas train layouts.
  • Low Operating Torque: Optimized disc geometry reduces the load on actuators, improving system response.
  • Durable Industrial Construction: High-grade materials ensure resistance to corrosion and thermal expansion.
  • Automated Integration: Standardized mounting interfaces for seamless connection to electric or pneumatic actuators.

Applications

  • Industrial Burner Modulation: Regulating fuel and air supply for high-efficiency burners.
  • Heat Recovery Systems: Handling pre-heated air in recuperative combustion systems.
  • Furnaces and Kilns: Precise atmosphere control for glass, ceramic, and metallurgical firing.
  • Boiler Control: Reliable air-gas ratio management for large steam and hot water plants.
  • Curing and Drying Ovens: Consistent flow regulation for paint shops and chemical processing.