Madden Blowdown Separator In Stock

These heavy steel tanks receive the blowdown water from a boiler and cool it down using the flash steam principle, along with convection cooling over several hours for the retained hot water. The tank is designed to breakup the blowdown flow by impacting the high pressure hot water on the steel centrifugal impact plate. The water droplets give up heat as flash steam is formed. The flash steam is vented from the top of the tank to the atomsphere. Retained water displaces cooled water from the previous blowdown, and is retained in the tank until it cools to the statute limits.

Data required for sizing calculations: Blowdown pipe size, type and equivalent length to tank. Boiler steam drum diameter & length. Boiler operating pressure.

1) Shell length (Dimension A) and connections size dimensions can be changed to meet the application requirements for the specific boiler as determined be design rule calculations.

2) Sizing of tank and connections should be determined using National Board design rules for blowoff tanks.

3) Construction: ASME Section VIII, Div. 1, 50 PSI DWP, with National Board serial number

To select the proper blowdown separator for your application, you need to know both the boiler operating pressure and the size of the bottom blowdown connection. Using those two figures, you can match the bottom blowdown inlet on the blowdown separator to the boiler blowdown connection size from the table under "Files"  & then  "Cutsheets"

For example, the proper blowdown separator connection for a 125 psi. boiler with a 1-1/2" bottom blowdown connection, you'll need part number BD230D45.

The aftercooler size is determined by the size of the drain in the blowdown separator. The temperature regulating valve sizing is dependent on the cold water inlet on the aftercooler selected. For sizing on blowdown tanks, or for blowdown separators for boilers over 300 psi, contact the factory. All connections 2-2/1" and smaller are NPT, 3" and larger are 150 psi RF flanged. See page 2 in the "Files" & "Cutsheets"