The first SCAM Deaerator was manufactured at the end of the 30’s. The experience acquired since then has been very important for reaching our quality, at the top of the state-of-the-art for degassing plants, thanks to a very low oxygen residual content and to a very high adaptability to variations occurring in the flow of the water to degas.
SCAM deaerators are unique: they use a type of dispersion with discs and rings (designed for reaching the optimal mix between water and heating steam), and our special spraying system, installed in the lower part.
The system consists of a set of stacked discs so that to form a vertical cylinder keyed, in the lower part, by a flat plate and tied in the upper parts on the bottom of the inlet water box. The water enters the vertical channel formed by the discs and is sprayed in very thin blades through the available space existing between every two discs. The spraying is constant and independent from the water flow, and every disc consists of an elastic ring connected, by means of spokes, to a central hub.
The spokes of two following discs are shifted one to the other and the discs are separated by an elastic ring put on the spokes. Thus, this ring acts as a spring that tends to open the lip formed by the two discs. All discs are stacked on a central shaft connected to an helicoidal spring placed in the water inlet box.
Without pressurized water, the helicoidal spring keeps all discs in closed position.
With water under pressure, the spring is compressed and the lip of every disc opens. The opening port is equal for all discs thanks to the elastic rings. The design of the helicoidal spring is executed in order to have fixed pressure losses for the min. and the max. operation flows, allowing the spraying to beconstant for all the range of feed water flows.