Glass Fiber String Wound Filter Cartridge

STRUCTURE 
 
String wound filter cartridge consists of multi-hole frames wound closely with textile fibers. Diverse kinds of filtering precision can be realized by controlling the winding density. As the outer bore diameter is larger than the inner one, the filter cartridges have a good deep-level filtering capability.  
Glass filter string wound is made of fiberglass string and stainless steel core, it has same structure as ordinary string wound filters but much higher temperature and corrosive tolerance. 

Yarn Material: baked glass fiber 
Core material: stainless steel
Sizes: 2.5"x20", 2.5"x30", 2.5"x40"
Norminal rates: 1micron, 5micron, 10micron, 25micron, 50micron, 100micron.

FEATURES 
 
• High temperature tolerance
• High crossive resistance
•  High flow and low pressure loss
•  High dirt holding capacity and long service life. 
 
MAIN TECHICAL SPECIFICATION 
 
•  Dimension: Outer diameter Ø63±1mm Inner diameter Ø 28mm or Ø 30mm 
•  Maximum operating Pressure: 0.5MPa （72.5psi）
•  Maximum operating Temperature: 399℃（750℉）

TYPICAL APPLICATIONS

•  Strong inorganic acids filtration
•  Organic solvents filtration
•  Oils filtration
•  Oxidizing Agents filtration
 
TABLE 1

FLOW OF FILTER CARTRIDGE 
 
The recommended flow for the filter cartridges in service is shown in the table (L/h for a 250㎜ filter cartridge)

Micron Rate(μ m)	Viscosity
	1cs(water)	30cs	60cs	120cs	250cs
0.5	70	60	40	25	-
1	150	90	60	40	-
3	300	120	80	50	-
5	500	170	120	60	45
10	800	300	140	70	60
20	1100	540	220	100	95
30	1200	670	300	150	130
50	1200	880	440	180	160
75	1200	1200	690	230	200
100	1200	1200	750	270	220

Notes:
1. The flow of each 250mm（10inch）filter cartridge should not exceed 1200 L/H (317G/H), otherwise its precision may be affected.
2. The flows shown in the above table are only the recommended values. The actual flow of the filter cartridge in service may change due to the liquid nature, temperature, the nature of the eliminated particles, the contents of the particles, etc.
3. It is recommended that a new filter cartridge used in the first time should work under a pressure drop of 0.1 - 0.3 bar (1.45 – 4.35psi ), while the final pressure drop for the filter cartridge exchange is set at 2.5 bar. For the filter cartridge whose precision is lower than 10μm, the pressure drop for the filter cartridge exchange had better be set at 1.0 -1.5 bar (14.5 – 21.8psi).

  
TABLE 2

PRESSURE DROP GRAPH

*pipe pressure loss excluded. 

TABLE 3

DIRT HOLD COMPARISON