Spray nozzle assembly for steam-desuperheating, steam-desuperheating device using same, and method of steam-desuperheating using same

A nozzle assembly for spraying cooling fluid in a steam-desuperheating device, comprising:

• a nozzle body defining a seating area and having an opening defining a flow passage extending through the seating area;
• a plug element movably attached to the nozzle body in the opening and selectively movable between closed and open positions relative thereto, wherein the plug element is seated against the seating area to close the flow passage in the closed position, and the plug element is away from the seating area to open the flow passage in the open position;
• and
• a splitter member fixed to a front face of the plug element, said splitter member having at least one splitter arm extending across the flow passage as viewed from the front of the plug element to deflect flow of fluid sprayed through the flow passage.