Inexpensive bag filter housings for light duty applications

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The ECOLINE model bag filter housing is a "light duty" design for applications having operating pressures ≤ 100 PSI. The "ECO" portion of "ECOLINE" refers to its cost being less expensive than our other bag filter vessel designs. A significant reason for the reduced cost is the manufacturing technique used for forming the cylindrical housing - a process called hydroforming.  Hydroforming the bag filter housing body eliminates the vertical weld seam used for traditionally fabricated bag filter housings and thus also eliminates welding, polishing and NDE procedures associated with those tasks.  Another cost savings feature is the V-Clamp style quick-opening closure which simplifies filter bag access.  The clamp can be opened/closed without special tools.  ECOLINE bag filter housings are only available in 316SS material of construction and with 2" FNPT (threaded) inlet/outlet connections. 

 

A nice feature of the ECOLINE bag filter housing is that their chamber cover has a concave design to increase ullage within the vessel, thus reducing spillover and inadvertent contact with the process fluid.  If you require a 150# design, consider the FLOWLINE II bag filter housing which shares the same hydro formed construction and evacuation cover design.

 

Optional features for ECOLINE filter bag vessels are differential pressure taps, powder epoxy coated adjustable steel mounting legs and the HAYFLOW upgrade option for increased flow capacity.  These are also available in miniature  sizes using #3 and #4 size filter bags for low flow rate applications benefitting from a smaller vessel size and reduced cost (refer to our MINILINE bag filter page).

 

Filter Bag Seal for ECOLINE bag filter housings

The sealing of the filter bag within the vessel begins with an o-ring supported by the formed bead around the circumference of the vessel. The restrainer basket, responsible for supporting the filter bag, mounts to this o-ring seal.  Next the sealing ring of the filter bag either lays across both the o-ring and restrainer basket interface (as illustrated above, the SENTINEL RING design) or via a snap ring sealed to the inner circumference of the restrainer basket.  Finally the stainless steel hold down ring provides downward pressure as it is sandwiched between the cover and o-ring/basket/filter bag. The sealing efficiency achieved wit this design is suitable for most nominally rated filtration applications.  If you require an absolute rated filter bag or are filtering to less than 50 microns you should consider the TOPLINE bag filter housing design due to its higher efficiency seal.

 

 

Flexible Port Configuration enables you to plumb the ECOLINE three ways:

   

 

 

Outline Drawings:

• Side-IN, Bottom-OUT

• Side IN/OUT

• LOOP Configuration