SFB Series Standard Felt Liquid Filter Bags are made of high-quality polypropylene, polyester & Nomexfelt materials which provide consistent performance of liquid filtration in various of critical industries. Standard felt liquid filter bags offer efficient depth filtering at increased flow rates, and the glazed outer as well as the plain inner finish are to reduce fiber migration and enhance filtration performance. The collars and top rings of felt liquid filter bags ensure general compatibility with most of commercial bag filter housings in processing. Sewing or welded connection of polypropylene, polyester or Nomex makes the liquid filter bags suitable for different housings and purposes. Felt filter bags extend life time without media migration or bypass. Customized felt liquid filter bags are accepted for different requests in many industrial fields.
| Filter Media | Polypropylene Felt, Polyester Felt, Nomex Felt |
| Bag Dimensions | Size 1: Ø7"×16.5" |
| Size 2: Ø7"× 32" | |
| Size 3: Ø4"× 8" | |
| Size 4: Ø4"× 14" | |
| Filtration Rating | 1, 5, 10, 25, 50, 75, 100, 150, 200, 300μm |
| Ring Style | Galvanized Steel O-Ring, Plastic Ring, S.S. O-Ring |
| Seam | Welded, Sewing, Welded top & Sewing Bottom, Sewing top & Welded Bottom |
● Free silicone construction and wide chemical compatibility
● Ratings of felt filter bags can be made from 1 to 300 micron
● High flow rate and low pressure drop with consistency of performance
● High dirt holding capacity, increasing efficiencies by preventing by-pass
● Glazed finish on polypropylene, polyester & Nomexfelt reduces fiber shedding
● Sewn or fully-welded construction with steel O-rings or molded plastic snap seal rings
● Liquid filter bags are made of 100% FDA approved polypropylene, polyester & Nomexfelt materials
| Electronics | Pre RO Filtration | Coatings |
| Oil Refinery | Food & Beverage | Paints and Inks |
| Petrochemical Process | Chemicals & Solvents | Waste Water Treatment |
Operation Data for Standard Felt Liquid Filter Bags
| Filter Media | Polypropylene Felt | Polyester Felt | Nomex Felt |
| Abrasion & Flex | Good | Good | Excellent |
| Weak Acid | Excellent | Good | Excellent |
| Strong Acid | Excellent | Good | Excellent |
| Weak Alkali | Excellent | Good | Excellent |
| Strong Alkali | Excellent | Poor | Excellent |
| Solvents | Fair | Good | Good |
| Maximum Operating Temperature | 70℃(160℉) | 160℃(320℉) | 250℃(500℉) |
| Maximum Differential Pressure | 1.8 bar (26.1 psi) | ||
| Recommended Change Out Differential Pressure | 1.03 bar (15 psi) | ||
Pressure Drop vs Flow Rate of Standard Felt Liquid Filter Bags
| Working Principle of Standard Felt Liquid Filter Bags |
● The drawing is the working principle of standard felt liquid filter bags ● Dirty fluid flow through the plain inner finish layer and large particle block in surface ● Felt filter media traps contaminants within its depth, no sliding sideways during processing ● Clean fluid come out from glazed layer, high filtration efficiency and long service life with low cost |
| SFB | Filter Media | Bag Dimensions | Filtration Rating | Ring Style | Seam |
SFB Series Standard Felt Liquid Filter Bags | P = Polypropylene Felt | 1 = Size 1: Ø7"×16.5" | 1 = 1 μm | G = Galvanized Steel O-Ring | W = Fully Welded |
| 5 = 5 μm | |||||
| 10 = 10 μm | |||||
| E = Polyester Felt | 2 = Size 2: Ø7"× 32" | 25 = 25 μm | S = Plastic Ring | F = Fully Sewing | |
| 50 = 50 μm | |||||
| 75 = 75 μm | |||||
| N = Nomex Felt | 3 = Size 3: Ø4"× 8" | 100 = 100 μm | Q = Welded Top & Sewing Bottom | ||
| 150 = 150 μm | U = S.S. O-Ring | ||||
| 4 = Size 4: Ø4"× 14" | 200 = 200 μm | T = Sewing Top & Welded Bottom | |||
| 300 = 300 μm |
For Example:
SFB-P-1-5-S-W
SFB Series Standard Felt Liquid Filter Bags - Polypropylene Felt - Size 1: Ø7"×16.5" - 5 μm - Plastic Ring - Fully Welded
Special specifications Standard Felt Liquid Filter Bags can be customized, such as special bag dimensions, ring style and seam etc.
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