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The BTG Steam Desuperheater DA4S is a combination of an injection nozzle and a control valve. It is inserted in a steam line of minimum diameter DN 150 mm/6″. The nozzle is inserted in the steam pipe through a flanged pipe stud that is welded to the steam pipe.
> The inlet or admission holes in the injection cage are arranged so that a, from the control point of view, good characteristic is obtained.
> The quantity of injected cooling water depends on the number and size of the ports that are opened up by the control plug.
> Injection nozzle with variable geometry
> High rangeability, 40:1 (water) and high steam cooling efficiency
> Combined control valve and injection nozzle in one unit
> Tight shut-off