Most gas handling systems have a requirement to change the gas flow direction to allow access to critical components, without shutting down the whole plant. With traditional dampers there is the danger of an upset, or explosion, if the two dampers do not act simultaneously. The FOURESS Diverter Valves was developed to handle such a situation in gas-turbine installations which incorporates a heat recovery boiler. Subsequently the concept has been used in a wide variety of industrial applications, such as refinery heat recovery plants, pollution control and nuclear ventilation systems and D.G Sets. Why a Diverter ? Improve boiler efficiency by reducing heat losses through a dump stack or by-pass. Permit On-load maintenance of waste heat boilers, gas turbines and fans. Ensure maximum plant safety by preventing both gas paths from being shut-off simultaneously. Increase plant efficiency by minimizing back pressure through the Isolator. Increase plant flexibility by allowing easy and safe switching between boilers, and/or turbines.
