STEAM TRAP
EDUCATION CENTER

In this fossil fired power plant, desuperheater drains are used to remove condensate from steam lines behind the desuperheater. This steam main is a high pressure / high temperature line in the plant. This steam line runs in the plant where a desuperheater valve is reducing the pressure and temperature (with the introduction of water) for some other process. This could be for the heating system or the air preheaters. Desuperheater steam drains are situated on this line to remove start-up loads, hot running loads, and cool-down loads.

On desuperheater drain applications, the best steam trap design in the marketplace is the Velan Multi-Segmented Bimetallic Steam Trap. The desuperheater drain application will have a “high” start-up curve, followed by a “large” hot running load. The only other load that will be encountered will be a “high” cool-down load when the line is de-energized.

Due to the fact that desuperheater drains can be very high in pressure and temperature, customers tend to weld these applications. Velan offers steam traps and “Piping Kings” in for hot reheat drains in A105 Carbon Steel.

Velan will offer the “SSF” Series or “SPF” Series steam traps for desuperheater drain applications.

Click on the following pressure range for the appropriate Velan Series Steam Trap: