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CBD Series - Dual Strainer System

CBD Dual Strainer System Concord Screen model CBD series strainer provides continuous flow and high capacity for suction or pressure installations. A continuous flow is maintained by providing two chambers and switching the flow from chamber to chamber with (4) butterfly valves. This allows the removal of the out of service basket for cleaning. While the fluid is flowing through the clean basket, the access cover of the other chamber may be opened and the clogged basket removed for cleaning. An optional manual backflush arrangement or blowdown connection is available. Model CBD strainers are available in sizes ½ thru 20” for system pressures up to 450 PSIG. The basket covers are quick opening or ANSI flanged.



Welded At Every Intersection Wedge Wire Construction
  • More compact
  • Less clogging
  • Easy to backwash
  • Precision built
Standard Features
  • Built in general accordance with ASME
  • Carbon steel body
  • Butterfly valves with ductile iron body and stainless steel disc
  • Large capacity basket – lengthens time between cleaning cycles
  • Wedgewire basket has more open area than perforated plate
  • ¼ NPT vent and gauge connections – drain connections
  • Standard basket is manufactured from 304 stainless steel
  • Standard 150 or 300 PSI design
  • Sizes 8” and above supplied with cover lifting davit
  • Legs supplied on all models 4” and larger
Options
  • Strainer vessels available in carbon steel, stainless steel or special alloys
  • Special internal or external coatings are also available
  • Higher temperature and pressure units available
  • Cover lifting assembly optional
  • Manual backflush
  • Wire cloth basket liners – wedgewire baskets
  • Baskets in other alloys
  • 304 or 316 stainless steel body; 316 stainless steel baskets
  • Differential pressure gauge installed

Dimensions

Dimensions



Dimensions


Standard Materials

Body - Carbon Steel or Stainless Steel
Basket - 304 Stainless Steel
Valves – Butterfly with ductile iron body ductile iron and stainless steel disc


Correction Factors

Basket slot opening (water) (smaller than 0.032”)
Multiply the pressure drop from the chart by the following factors:

0.016" (400 Microns) - 1.2
0.010" (250 Microns) - 1.6
0.008" (200 Microns) - 2.0
0.006" (150 Microns) - 2.4


Viscosity Correction Factors
  1. Multiply the pressure drop for water by the specific gravity of liquid.
  2. Multiply the result by the correction factor for the more viscous liquid.

Viscosity Correction Factors Chart
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