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Filter Bag Information 

Filter Bag Sizes

Eaton offers the four most common "industry standard" filter bag sizes, referred to as #1, #2, #3 and #4 sizes as follows:

SIZE OPENING DIAMETER
in (mm)
LENGTH
in  (mm)
Maximum Flow Rate, water
GPM (LPM)
Surface Area
FT 2
(m2)
Volume
Gal (L)
1 7 (177.8) 17 (431.8) 90 (341) 2.6 (0.24) 2.0 (7.60)
2 7 (177.8) 32 (812.8) 180 (681) 5.0 (0.46) 4.5 (17.0)
3 4 (101.6) 9 (228.6) 25 (95) 0.8 (0.07) 0.5 (1.90)
4 4 (101.6) 15 (381.0) 50 (189) 1.5 (0.14) 0.7 (2.70)

 

Filter Bag Retention

Retention is expressed in microns (μm); Divide by 1000 to convert to millimeters (mm).

 

Filter Bag Efficiency

Eaton filter bags are offered in two efficiencies, "nominal" and "99%":

 

 

 

Filter Bag particle retentionHigher efficiencies are obtained by increasing the thickness of the filter bag material and in some cases, using multiple layers of material, each layer having a different retention.  This creates a torturous path for the particles to follow and maximizes the volume of particles that can be retained before changing the filter bag.

 

Filter Bag Seals

Eaton Filter Bags are generally available with two types of sealing rings, a SNAP-RING™ and a SENTINEL™ RING.

 

SNAP-RING filter bag sealSNAP-RING™ filter bags are "economy bags" having nominal efficiencies.  To help ensure the flow passes through the filter bag material and not around the edges of the filter bag opening, a ring is sewn into the material which "snaps" into a corresponding groove in the filter housing support basket.  SNAP-RING™ filter bags are available with stainless steel, carbon steel, polypropylene and nylon rings.

 

SENTINEL RING filter bag sealing ringSENTINEL™ RING filter bags have a molded plastic ring welded to the filter bag, their shape also "snaps" into the corresponding groove in the support basket like SNAP-RING™ filter bags.  In addition, due to their unique shape, downwards compression creates a superior "crush seal"; pushing the OD of the filter bag into the ID of the support basket groove for a tighter seal.  To fully benefit from SENTINEL™ RING filter bags an optional "hold down ring" is required to transfer the lid closure pressure to the SENTINEL™ RING.  Some filter housings, such as the goose-neck style TOPLINE™, do not require a hold-down ring.

 

Restrainer Baskets

filter bag restrainer basketFilter bag restrainer baskets provide support to a filled filter bag, reducing the chance for filter bag damage.  The standard filter bag restrainer basket is constructed of 316SS, has 9/64" (3.57mm) perforations and is slightly shorter than the filter bag length to ensure full support.  We can provide 20, 30, 40, 60, 80, 100, 150, 200 and 325 mesh lined support baskets to "convert" your filter housing to a strainer if desired.