SWM
Sintered Wire Mesh Filter Elements

The superior stainless steel filter element
for chemical process industries

High Performance SWM™ Filter Elements


SWM™ filters were developed to replace poorly performing sintered porous metal, wedge-wire, string wound and other types of cartridges. In many instances, flow rates may be dramatically improved without compromising filtration efficiency. In other instances, frequency of downtime for element cleaning and replacement may be sharply reduced, resulting in savings which can far outweigh initial retrofit costs.

SWM™ Filter Medium
Construction

SWM™ media comprise five (5) carefully selected layers
for optimum performance

Standard Element Design


Standard SWM™ filters are 2-1/2" OD non-pleated cylinders with one longitudinal weld seam, and welded end-fittings. Elements longer than 36" nominal are constructed in segments with machined joiner rings. SWM™ filters are available in two styles: Gasket-Seal Series and Threaded Connector Series.

Operating Parameters


Given their 100% 316L stainless steel construction, standard SWM™ elements are appropriate to any environment compatible with this excellent alloy. Recommended temperature: up to 600° F for threaded connector elements. Gasket-seal elements are limited by the temperature resistance of the gaskets as follows: Buna-N 300° F, Viton 400° F, Teflon 450° F. Recommended maximum pressure differentials: 100 psid forward flow (outside-to-inside), 50 psid reverse flow.

Standard Element Part Numbers


Nominal
Grade
Configuration
Code
 
Length
Code
Form P/N
as Follows:
SWM
- - -

 

Nominal Grade
 
Configuration Code
Nominal
Grade
Removal
Ratings (Liq.)
Removal
Ratings (Gas)
Code
Description
Nom.
Abs.
Nom.
Abs.
Gasket-Seal Series

2

2
12
2
9
DOE
Double open end; Buna-N gaskets
5
5
18
4
14
DOP
Same; Ethylene-Propylene gaskets
10
10
25
6
18
DOV
Same; Viton gaskets
20
20
40
10
25
DOT
Same; Teflon gaskets
40
40
60
30
50
Threaded Connector Series
60
55
70
40
70
NPA
1" male NPT/Hex connector
80
75
90
50
80
NPB
1-1/2" male NPT/Hex connector
100
100
120
75
100
 
  • All ratings are in microns
  • Nominal ratings correspond to 98% removal efficiencies.
  • Filter performance varies with filtrate, contaminant, pressure and flow characteristics. All data and information contained herein are as a guideline only. For further information please consult factory.
Gasket-Seal Series
Nominal
Length
Actual Length
Filter Area
(Sq. Ft.)
w/o Gaskets
With Gaskets
10"
9.87"
10.06"
0.51
20"
19.87"
20.06"
1.04
30"
29.87"
30.06"
1.57
40"
39.92"
40.11"
2.08"
 
Threaded Connector Series
Nominal
Length
Actual Length
Filter Area
(Sq. Ft.)
NPA (1")
NPB (1½")
10"
10.87"
11.12"
0.50
18"
18.87"
19.12"
0.93
24"
24.87"
24.12"
1.24
30"
30.87"
31.12"
1.56
36"
36.87"
37.12"
1.88
48
48.67"
48.92"
2.48

  1 -
 

Elements longer than 36" nominal include one welded joiner ring at the midpoint.
  2 -

 
Actual element length shown are end-to-end including threaded connectors. Connector length including hex, is 1.25" for NPA, 1.50" for NPB.
Note: Non-standard lengths also available.

 

Superior Features of SWM Include:


Quality Construction

Standard SWM™ cartridges are constructed in 100% extra low-carbon stainless steel, including SWM™ filter medium hardware, and welding filler materials, affording absolutely maximum corrosion resistance. End fittings are MKI-designed heavy gauge custom-machined hardware, combining retrofit compatibility, ease of use, and maximum structural strength. Our high-quality welds are 100% leak-tested during assembly to insure structural integrity.

Unique SWM™ Filter Medium

Drawing on decades of experience in the field of sintered metallic filter media, MKI has developed optimized filter medium constructions which are produced by our unique laminating, sintering and HIP diffusion-bonding processes. These processes have been refined to provide maximum physical integrity with no metallurgical degradation or loss of corrosion resistance. SWM™ filter medium is specifically designed for high-performance cylindrical cartridge architecture, and provides optimal surface collection and barrier filtration of particulate contaminant.

Cleanability

SWM™ elements are fully cleanable and reusable, eliminating repeated cartridge replacement and waste cartridge disposal. A variety of cleaning methods may be employed, including chemical processing and high-temperature hydrogen furnace heat treating. MKI can advise cleaning methods, offer reconditioning services, or recommend outside contractors who specialize in the cleaning and testing of stainless steel filter elements.

Wide Performance Range

SWM™ is available in nine standard filtration grades, ranging from 100 down to 2 microns nominal (98% removal rating for liquid filtrates), with total weight removal up to 99.99% under optimal conditions. With availability in standard all-316L stainless steel, or alternate materials for special applications, compatibility with high flow rates, high temperatures, high pressures, precoats, and corrosive environments, SWM™ filters can meet the demands of many filtration applications. For even finer filtration, ask about our unique, state-of-the-art SKMTM composite filters.


SWM™ Typical Applications


  • Membrane Support
  • Steam Filtration
  • Catalyst Recovery
  • Food and Beverage
  • Filter/Demineralizer

SWM Filter Media Technical Data


Filtration ratings and air flow characteristics are presented in our product bulletin. Click on the link below to download the PDF version of the bulletin or you may request to have the bulletin mailed to you by emailing your request to .


Download SWM™ bulletin



Martin Kurz & Co., Inc.

8439 Triad Drive • Greensboro, NC, USA 27409
Ph: 336-217-3814 • Fax: 336-668-4452
Email: