Size #1 duplex filter bag housings feature a 15" basket depth and are capable of filtering a fluid down to 1 micron size. This duplex housing can also be used for straining particles down to 74 microns when used with a basket strainer. Duplex bag filter housings save time and money as they permit continuous operation meaning one side of the vessel can be serviced while the other is in use. Using a single multi-port valve operating system, simply switch the flow back and forth between the two filter vessels.

This duplex housing features heavy-duty baskets, 316 stainless steel butterfly design valves, adjustable legs, low pressure drops and complete mechanical stops. The four valves offer a bubble-tight closure and can be serviced individually without having to disturb the other valves or piping. Additional options include extra-length legs, liquid displacers, DP ports and 316 stainless steel basket perforation. Configure this size #1 duplex housing to your meet the specific requirement of your filtration or straining application.

Key benefits:
  • Continuous operation as the two chambers operate independently
  • Four separate butterfly design valves controlled by a single lever offer bubble-tight closure
  • Mechanical stops to completely open and close valves
  • Minimized pressure drop due to fewer number of elbows in flow path
  • A single-valve pressure balancing vent system is furnished to ease movement of the lever and to fill the just serviced vessel before use
  • Hinged eye bolt cover can be easily removed without the need for special equipment or tools
  • O-ring sealed covers available in fluoroelastomer (FKM), ethylene polypropylene (EPR), Buna N, PTFE, etc.
  • Heavy-duty baskets
  • Vents in filter covers and drain ports in filter housing speed evacuation and filling
  • Easy to clean
  • Pipe sizes 3/4" to 2" Female NPT & 150 ANSI Flange
  • 300 PSI with NPT or flanged
  • Proudly Made in the USA


Stainless steel 316 (SS316) exhibits excellent corrosion resistance. It has an oxidation resistance of 1600°F for intermittent service and 1700°F during continuous service. SS316 is often found in pipes and coils, as well as food preparation and laboratory equipment. The Cary Company has tense strength 316 stainless steel drums, which are able to resist against breaking when under strain and corrosion.


This information has been provided as a general guide. It is the customer's responsibility to select the proper container for product and application compatibility.

Additional Information

More Information
MaterialStainless Steel (316)
Size1 (7.06" x 16.5")
Bag/Cartridge QtySingle
Housing Size15"
Pipe SizeConfigurable
Outlet StyleConfigurable
Pressure Rating150 PSI
Basket StyleConfigurable
Weight350 lbs.
Country of ManufactureUnited States
Note:*Size #4 (12" Basket) shown in photo.
Expert Help - Need help with a unique specification or more information on pricing? Speak to one of our Liquid Filtration Experts to find the best solution for your application! -- Call 630.629.6600 or email today!
Q & A
Customer Questions
Can you ship internationally? Where are you located?
The Cary Company online ordering platform is only set up to ship within the United States. For international shipments, please contact us at 630.629.6600 or Sales@thecarycompany.com, and we will be happy to process your order. Our main warehouse and office are located in Addison, Ill. We also have warehouses in across the United States that you can see here. Thank you for choosing The Cary Company.
Are duplex bag filter vessels continuous operation?
Yes, duplex filters are continuous operations that will not interrupt your processes.
What if one side of a filter vessel needs to be serviced?
Flow can be switched back and forth between the two vessels, allowing one side to be served on while the other is still in use.
What are dual bag filter vessels made of?
Duplex bag filter vessel housings are constructed of either carbon steel, 304 stainless steel, or 316 stainless steel.
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