Industrial Filter Manufacturing produces liquid filter bags that offer several advantages for industrial applications. Filter bag technology emerged in the 1960s-1970s and provides ease of installation, low cost, simple operation, and quick filter bag changes. Filter bag systems can be open or closed, with open systems using gravity or low pressure and closed systems using pressurized housings. Closed filter bag systems consist of a filter vessel, restrainer basket, and filter bag. Filter vessels and bags come in various types and materials to suit different flow rates, pressures, temperatures, and contaminants.

1. Industrial Filter Manufacturing Limited Liquid Filter Bag Basics

2. Filter Bags Advantages Ease of installation Low cost Simple to operate Quick change of the filter bag Filter Bag technology emerged strong in the 1960’s and 1970’s offering the following advantages: Versatile across varied industries, applications and operating conditions Competes and compliments other filter methods

3. Filter Bag Systems Open Systems Low pressure or gravity Adaptor Head Filter Bags Tie-on filter bags Closed Systems Pressurized Housings Pumped fluid Wide range of filter bags

4. Adaptor Head and Tie-on Filter Bag Open system No support for the bag Low pressure and low flow rate Usually single pass Minimal capital investment cost Types of Filter Bags Mesh and Felt Drawstring or clamped bags Adaptor head filter bags

5. Closed System Pressurized Filter Bag system Traditionally uses a pump Includes a pressurized filter housing Accommodates higher flow rate and greater pressure Single or multiple pass through the filter Side stream or full flow High dirt loading Easy change out system Many bag styles available

6. Closed Filter Bag System Made up of three main components: The filter vessel The restrainer or support basket The filter bag

7. Filter Vessel Standard Sizes Size is determined by understanding the application Viscosity Flow rate Temperature Pressure Dirt loading Desired Micron retention Micron distribution of contaminate

8. Vessel Types Side Entry: Fluid enters vessel through the side Simple construction Economical Fasten the lid with a band clamp or swing bolts

9. Vessel Types Top Entry: Fluid enters the vessel through the top Lid acts as the hold down mechanism for the bag Easy change out Better bag sealing

10. Vessel Types Duplex Two separate systems share the same inlet and outlet Double the filtration capacity by increasing the surface area Use of isolation valves allow a change-out without interrupting process flow

11. Vessel Types Multi Bag Used in high flow or high dirt applications Optional inlet and outlet configurations Many lid constructions available for ease of use Housing anywhere from 3 to 24 filter bags

12. Restrainer Basket Perforated or mesh stainless steel construction Creates a “bypass free” environment A seal is created between the bag and the basket and the housing Provides critical support for the bag Bag can not withstand the pressure and flow without the basket support

13. Filter Bag Made up of three basic elements Filter Media Retainer Options

14. 1. Filter Media Mesh Felt Melt blown micro-fibre Spun bond / point bond Multiple layers of varying materials

15. Mesh Polyester multi-filament Nylon and Polyester Surface Filtration Precise openings Low fibre migration Can be washed and reused Nylon Mono-Filament

16. Felt most commonly Polyester and Polypropylene fibre construction Depth Filtration 3 Dimensional Filtration Complex structure creating a torturous path for dirt Glaze or Singed Surface

17. Full Media Product Line Oil Removal Bags 4 levels of oil removal capability: POMF, POMB, PSORB, OWS Extended Felt Thicker Loftier felt High Efficiency Bags High Efficiency Particle retention

18. 2. Retainers Zinc plated carbon steel ring Stainless steel snap band Stainless Steel Ring Plastic Flange Plastic ring Draw String Elastic O-ring

19. Options and Accessories Custom Manufacturing Material Sourcing Sample replication Specialty bags FDA compliance Silicone Free Certification

20. Applications where filter bags used? Potentially anywhere fluid is being processed Pharmaceutical Automotive Food and beverage Waste and process water Petrochemical Paint and Chemical Works well in partnership with other filtration methods

21. Fully welded bag No needle holes Eliminates thread issues Strength equal to other welded bags Economic manufacturing process

22. Steel Ring welded bag Minimal needle holes Integrated handles No Lump seam Economic manufacturing process

23. Industrial Filter Manufacturing Filter Bags Competitively Priced Quality Controlled Manufacturing Process Consistent Performance Reliable Deliveries Focus on customer service and support