Blowdown Separator

The Model BDS, Boiler Blowdown Separator is a manufactured unit used for after-cooling of boiler blowdown or condensate before discharge to sanitary sewer. The BDS is ideally suited for reducing wastewater temperature of continuous blowdown discharge to municipal sewers. Atmospherically vented, the Model BDS is a complete unit including a carbon steel separator, a Make-up water Capillary-style temperature control valve, and vent head. Each unit is custom engineered and designed to meet specific system requirements. All systems are fabricated and welded per ASME Section IX Code and Standards, and are hydrostatically tested prior to shipment.

Sizing and Selection:
Units are custom engineered for individual systems, based upon the selection of the system parameters:

I. System Flow Rate: Range of 5 lb/hr to 30,000 lb/hr

II. Blow-down Upstream Pressure: Range of 5 psig to 250 psig

III. Flash Vessel Pressure: Range of 0 psig to 15psig

IV. Dimensions: Based on specific requirements

Conditions of Operation:
Max. Allowable Pressure: 125 psig
Max. Allowable Temperature: 375° F.


  • Fabricated structural steel frame
  • Capillary-style temperature control valve
  • Carbon steel flash vessel
  • Hydrostatically tested
  • High temperature industrial enamel paint


  • System inlet / outlet thermometers
  • Stainless steel construction
  • Oversized connections
packaged pumping systems
industrial control panels

Contact us to learn more about Envirosep solutions.

We offer integrated solutions for your fluid handling, heat transfer and energy recovery needs.