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Rigimesh® Media product photo Primary L

Rigimesh® Woven Wire Mesh Media

Rigimesh medium is a sintered, woven-wire-mesh product having the greatest permeability for comparable removal efficiency. Sintered in a high temperature vacuum furnace, the wires are bonded at every point of contact to produce an extremely strong metallic medium with wires that will not shift under stress; thus the pore size and integrity is continuously maintained. Since sintering increases mechanical strength of the woven wire mesh media, this patented Pall process permits the use of finer diameter wires in manufacturing the medium.

We have the ability to sinter multi-layer composites of different meshes on special order, and to meet application needs for precise flow, pressure drop, thickness, or strength.

Major Advantages

Features

  • Controlled pore size with a sharper particle size cut-off than depth filter media
  • Finer sinter-bonded woven wires

Benefits

  • Assured absolute particle retention
  • Long on-stream life
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Description

Rigimesh medium is a sintered, woven-wire-mesh product having the greatest permeability for comparable removal efficiency. Sintered in a high temperature vacuum furnace, the wires are bonded at every point of contact to produce an extremely strong metallic medium with wires that will not shift under stress; thus the pore size and integrity is continuously maintained. Since sintering increases mechanical strength of the woven wire mesh media, this patented Pall process permits the use of finer diameter wires in manufacturing the medium.

We have the ability to sinter multi-layer composites of different meshes on special order, and to meet application needs for precise flow, pressure drop, thickness, or strength.

Major Advantages

Features

  • Controlled pore size with a sharper particle size cut-off than depth filter media
  • Finer sinter-bonded woven wires

Benefits

  • Assured absolute particle retention
  • Long on-stream life

Specifications

Chemical Compatibility

Acids
  • Acetic acid - glacial: Resistant
  • Acetic acid - 10%: Resistant
  • Acetic acid - 30%: Resistant
  • Acetic acid - 90%: Resistant
  • Hydrochloric acid - conc. (35%): Resistant
  • Hydrochloric acid - 6N (20%): Resistant
  • Hydrochloric acid - 1N (3.3%): Resistant
  • Nitric acid - conc. (67%): Resistant
  • Nitric acid - 6N (27%): Resistant
  • Sulfuric acid - conc. (96%): Resistant
  • Sulfuric acid - 6N (16%): Resistant

 

 Alcohols
  • Amyl alcohol: Resistant
  • Benzyl alcohol: Resistant
  • Butanol: Resistant
  • Ethanol: Resistant
  • Isopropanol: Resistant
  • Methanol: Resistant

 

Aromatic Hydrocarbons
  • Benzene: Resistant
  • Toluene: Resistant
  • Xylene: Resistant

 

 Bases
  • Ammonium hydroxide - 3N (5.7%): Resistant
  • Ammonium hydroxide - 6N (11.4%): Resistant
  • Potassium hydroxide - 3N (15%): Resistant
  • Sodium hydroxide - 3N (11%): Resistant
  • Sodium hydroxide - 6N (22%): Resistant
Esters
  • Amyl acetate: Resistant
  • Butyl acetate: Resistant
  • Cellosolve acetate: Resistant
  • Ethyl acetate: Resistant
  • Isopropyl acetate: Resistant
  • Methyl acetate: Resistant
Ethers
  • Ethyl ether: Resistant
  • Tetrahydrofuran: Resistant
  • Tetrahydrofuran/water (50/50 v/v): Resistant
Glycols
  • Ethylene glycol: Resistant
  • Glycerol: Resistant
  • Propylene glycol: Resistant
Halogenated Hydrocarbons
  • Carbon tetrachloride: Resistant
  • Chloroform: Resistant
  • Ethylene dichloride: Resistant
  • Methylene chloride: Resistant
  • Tetrachloroethylene: Resistant

 

Ketones
  • Acetone: Resistant
  • Cyclohexanone: Resistant
  • Methyl ethyl ketone: Resistant
  • Methyl isobutyl ketone: Resistant

 

 Miscellaneous
  • Acetonitrile: Resistant
  • Dimethyl formamide: Resistant
  • Dimethyl sulfoxide: Resistant
  • Formaldehyde - 37%: Resistant
  • Formaldehyde - 4%: Resistant
  • Hexane - dry: Resistant
  • Kerosene: Resistant
  • Pyridine: Resistant
  • 18 Megohn water: Limited Resistance

 

Oils
  • Cottonseed: Resistant
  • Peanut: Resistant

 

Performance

Flow Characteristics

Grade

Clean Pressure Drop

Gaseous Service
Air Permeability1 psid-ft2/scfm 		Liquid Service
Water Permeability2 psid-ft2/gpm
A * *
T * *
S 0.000055 0.00015
R 0.00009 0.0002
M 0.00018 0.0005
J 0.00029 0.0040
K 0.00085 0.0067
1 Pressure drop in psi obtained by multiplying value shown by actual gaseous flow rate desired (ACFM), ratio of viscosities actual cp/0.018, all divided by total filtration area (ft2) of element selected.
2 Pressure drop in psi obtained by multiplying value shown by actual flow desired in gpm, viscosity of liquid in centipoise (if other than 1 cp), all divided by total filtration area (ft2) selected.
*Properties are not readable.

Removal Efficiency

Grade

Removal Ratings (µm)

 Nominal Thickness (in.)

Liquid Service3

Gas Service4

98% 100%

98% Removal
by Weight

 100%
Removal
K 5 18 3.5 13 .006
J 10 25 6 18 .006
M 17 45 11 25 .006
R 40 70 30 55 .011
S 70 105 50 85 .010
T 145 225 120 175 .014
A 300 450 250 350 .019
3 Based on modified F2 efficiency test which measures removal efficiency by particle count.
4 Weight percent removal data based on AC Fine Test Dust in air. Absolute retention ratings based on actual particle count data.Typical Performance

Type

Media and Membranes

Ordering Information

 
Part Number Grade Size (in.)
A, 304L, 18X48 A 18x48
A, 304L, 20x48 A 20x48
A, 304L, 21x48 A 21x48
J, 304L, 18X48 J 18x48
J, 304L, 20x48 J 20x48
J, 304L, 21x48 J 21x48
K, 304L, 18X48 K 18x48
K, 304L, 20x48 K 20x48
K, 304L, 21x48 K 21x48
M, 304L, 18x48 M 18x48
M, 304L, 20x48 M 20x48
M, 304L, 21x48 M 21x48
R, 304L, 18X48 R 18x48
R, 304L, 20x48 R 20x48
R, 304L, 21x48 R 21x48
S, 304L, 18X48 S 18x48
S, 304L, 20x48 S 20x48
S, 304L, 21x48 S 21x48
T, 304L, 18X48 T 18x48
T, 304L, 20x48 T 20x48
T, 304L, 21x48 T 21x48
Y, 304L, 18x48 Y 18x48

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