The Lockwood Model BDS blowdown separator is designed to accept pressurized, high temperature water, and separate the flash steam from the liquid condensate for safe disposal. Blowdown separators are typically utilized to dispose of boiler blowoff/blowdown, however, they can also be used for other high temperature sources such as deaerator drain and overflow connections, process drains, or any other application where pressurized condensate needs to be sent to drain.
Pressurized condensate enters the separator at high speeds tangential to the shell thus providing cyclonic separation of the steam and water. A stainless steel wear plate at the point of impingement provides improved resistance to erosion. Clean flash steam is vented to atmosphere via the large non obstructed vent. The remaining condensate is drained via gravity out the bottom of the tank. An optional aftercooler with an automatic temperature regulating valve is typically utilized to cool the hot condensate before it is discharged to drain.
STANDARD SEPARATOR
FEATURES:
- 5/16” thick ASME Section VIII
separator vessel - Stainless steel wear plate
- Support legs
- 5/16” thick ASME Section VIII
AFTERCOOLER
FEATURES:
- Automatic temperature
regulating valve with strainer - Thermometer
- Automatic temperature
OPTIONS:
- Increased shell thickness:
3/8” thick - National Board Certification
- Pressure Gauge
- Increased shell thickness:
Boiler Operating Pressure
SIZE OF BLOWDOWN VALVE ON BOILER
PSI 1″ 1-1/4″ 1-1/2″ 2″ 2-1/2″
15 BDS20-1-2-2.5-0.75 BDS20-1.25-3-4-1 BDS20-1.5-3-4-1.25 BDS20-2-4-5-1.25 BDS34-2.5-5-6-2
50 BDS20-1-2-2.5-0.75 BDS20-1.25-3-4-1 BDS34-1.5-3-4-1.25 BDS34-2-4-5-1.25 BDS34-2.5-5-6-2
100 BDS20-1-3-2.5-1 BDS34-1.25-4-4-1.25 BDS34-1.5-4-4-1.25 BDS34-2-5-5-2 BDS34-2.5-6-6-2
125 BDS34-1-3-3-1 BDS34-1.25-4-4-1.25 BDS34-1.5-4-4-1.25 BDS34-2-5-5-2 BDS56-2.5-6-6-2.5
150 BDS34-1-3-3-1 BDS34-1.25-4-4-1.25 BDS34-1.5-4-5-1.5 BDS56-2-5-6-2 BDS56-2.5-6-6-2.5
175 BDS34-1-3-3-1 BDS34-1.25-4-4-1.25 BDS34-1.5-4-5-1.5 BDS56-2-5-6-2 BDS56-2.5-6-8-2.5
200 BDS34-1-3-3-1 BDS34-1.25-4-5-1.25 BDS56-1.5-4-5-1.5 BDS56-2-6-6-2 BDS56-2.5-6-8-2.5
225 BDS34-1-4-4-1.25 BDS56-1.25-4-5-1.25 BDS56-1.5-5-5-1.5 BDS56-2-6-6-2
250 BDS56-1-4-4-1.25 BDS56-1.25-4-5-1.25 BDS56-1.5-5-5-1.5 BDS56-2-6-8-2.5
300 BDS56-1-4-4-1.25 BDS56-1.25-4-5-1.5 BDS56-1.5-5-5-2 BDS56-2-6-8-2.5
Select the appropriate blowdown separator based on the boiler operating pressure and the size of the blowdown valve installed on the boiler. If multiple boilers are connected to one separator, use the highest operating pressure and largest blowdown valve for the selection.
NOTES:
- The aftercooler temperature regulating valve is sized assuming a cooling water temperature of 70-80°F.
- The aftercooler temperature regulating valve is sized assuming an upstream water pressure of 40 PSI.
