DMA/AF-HTC | Fisher DMA/AF-HTC Desuperheater | Fisher

Fisher DMA/AF-HTC Desuperheater

The DMA/AF-HTC is functionally equivalent to the DMA/AF; however it is structurally suited for more severe applications. The most common applications include boiler interstage attemperation; where the desuperheater is exposed to high thermal cycling and stress; high steam velocities and flow induced vibration. In addition to this specific application; the DMA/AF-HTC is suitable for other severe desuperheating application environments.

• An integral thermal liner inside the desuperheater body pipe to minimize the potential for thermal shock when cool water is introduced.
• Optimized spray pattern with AF nozzle technology allows for a wide operating range to achieve optimal mixing and quick vaporization at all flowing conditions.
• Nozzles can be easily removed; maintained; or replaced without having to replace the entire unit.
• The nozzle mount for the DMA/AF-HTC is engineered to minimize the potential for excitation due to vortex shedding and flow induced vibration.
• Multiple nozzle configurations are available to provide medium to large amounts of spraywater to cool steam to the required temperature.
• Uses a forged construction; optimized to move weld joints away from high stress regions.