Why Cleanable Media for Industrial Filter Processes is More Environmentally Friendly

Due to the new environmental regulations — and the costs associated with waste disposal — the manner in which industries filter to either recycle or eliminate filtration waste is constantly changing.

Selecting filtration equipment is the combined result of many considerations.

In addition to removing undesirable material from a liquid stream, the filtration method selected must also satisfy other requirement.

Installed costs must be weighed against operating costs. Waste disposal costs must be considered. Is continuous flow a requirement of the application, or can the filtration equipment be operated intermittently? Is worker exposure to the process liquid during filter cleaning or replacement a problem?

These and other factors must be weighed when choosing the right filtration method for a particular application.

Today, more than ever, self-cleaning filters (cleanable media) is the better methodology — and many times the right thing to do — for many reasons.

With cleanable systems, you enhance employee safety by minimizing worker and workplace exposure to process liquids.

You minimize or eliminate the unlimited cost and inconvenience of media replacement.

You minimize or eliminate the never-ending and ever-rising cost and hassle of media disposal.

You drastically reduce the labor costs to source, purchase, inventory, transport, change, and dispose of replacement media.

You increase the quality and consistence of filter performance and productivity.

To help reduce the confusion when you are evaluating different filtration methods/systems, I have compiled a list of questions you may want to consider:

Factors to Consider: When selecting a filter for a particular application, the following criteria should be considered.

1. How large is the process volume? What is the flow rate?

2. Is it a continuous or batch process?

3. What are the material characteristics of the solids being removed? How large are the particles? Is the material hazardous? Can the material being removed be recycled back into the process stream at another point?

4. What are the waste disposal costs? How often do bags or cartridges need to be replaced? Can the waste volume be reduced or eliminated by switching to a different filtration method?

5. What are the labor and downtime costs for filter or cartridge replacement? Can downtime be reduced or eliminated by switching to a different filtration method?

— Eaton Filtration

For questions about industrial filtration, please visit the Ask Filter Man page on Twitter at www.twitter.com/askfilterman


Integration Update 2 – Eaton’s Internormen Technology

In our last issue we introduced you to Eaton’s integration website, “brands-update” as well as our Facebook pages to keep you informed about the Internormen integration progress.

We are pleased to announce the latest updates to the website:

  • High resolution, dual branded brochures are available for download only. Visit the literature library.
  • Complete “how-to buy” information. Visit the how-to buy page.
  • Internormen Product Line CD-ROM with Interactive Product Specifier is available upon request.

To order the CD-ROM, please fill out the form on the contact us page.

As always, if you have any questions or comments please feel free to call or email us anytime.

Eaton’s Newest Customer Success Story : Paint Manufacturer

The Eaton DCF-1600 mechanically cleaned filter was installed to remedy the problems associated with large particles and foreign fibers. The quality of finished paints improved while the company reduced process costs, and gained a safer and cleaner work environment.

Read the full success story today. Click to Read

Magnetic Inserts for Fabricated and Standard Cast Pipeline Strainer Baskets from Eaton

Although a mesh lined Eaton strainer basket will catch and remove very small unwanted particles (down to 400 mesh), there are applications where microscopic iron or steel particles are present in the fluid. Because of their size they will often pass through the finest mesh screen. The problem is particularly prevalent whenever there is wear of iron or steel parts against each other in the system.

Examples are cooling or lubricating lines to bearings, liquids being processed on rolls or roller mills such as paint or ink, and any material passing through a gear system. A simple, cost-effective way to remove these damage causing particles is to install magnetic inserts in the Eaton strainer basket. All the fluid passes over the powerful magnets, which catch the fine steel or iron particles that may otherwise pass through the mesh lining of the basket.

The magnets are Alnico, guaranteed to retain their magnetism indefinitely, and so powerful they will hold metal several times their own weight. They are
completely encased and sealed in a 1/8” thick type 316 stainless steel shell— thus assuring freedom from contamination or corrosion.

What in the world is Delta P ( ΔP ) ?

So– what in the world is Delta P … and no we’re not talking about your old Fraternity or Sorority.  Actually in the world of filtration Delta P (ΔP) is a very commonly used term, Delta P or its symbol usually refers to the pressure drop across a piping component such as a valve or industrial filter.   The symbol for Delta “Δ” (yes, it’s the Greek symbol) represents the ‘change’ in something; in this case a change, or drop, in pressure (p).

To determine the Delta P across a valve or filtration system with pressure gauges, just subtract the outlet pressure (P2) from the inlet pressure(P1) … yes, it’s that simple.

Here is an Example:

Valve 1 = 60 PSI – Valve 2 = 58 PSI

ΔP = 2
For more helpful filtration tips, updates and the latest news from Eaton’s Filtration Business follow @AskFilterMan on twitter.



The higher the velocity, the higher the potential for shock loading.

Velocity plays an important role when recommending a Strainer for a piping system. The higher the velocity, the higher the potential for shock loading (water hammer). Typically for metal piping systems the most desirable range is between 6 to 1 0 feet per second. For plastic piping systems the maximum recommended flow rate is 8 feet per second.

Most end users won’t know the flow velocity in their systems, but they will know the flow in gallons per minute. To convert gallons per minute to velocity Ft./Sec. take the GPM  0.4085 divided by the inside diameter of pipe squared.

(GPM x 0.4085) ÷ (ID² in Inches) 

Note: The above calculation is for water only.  

Processing chocolate? Eaton’s filtration business has the perfect solution for you.

Did you know that Eaton’s filtration business has extensive experience with the processing of chocolate and other cocoa products.

Some specific examples include:

  • Milk, white and dark chocolate
  • Chocolate-based coatings and frostings
  • Chocolate beverages
  • Cocoa mass or liquor
  • Cocoa butter
  • Cocoa powder
  • Pectin for jams and marmalades

Water is introduced many times in the beginning processing stages to filter out shells, dirt, bugs and larvae. The water is recycled many times and then re-circulated – our filtration systems can help to make this process more efficient and more complete.

Our industrial filtration systems are used in a number of processes, a few specific examples include:

  • Harvesting
    Once removed from the trees, the cocoa pods are split open to release the beans that are embedded in a pulp. When the pods are broken the beans and pulp are sterile, but they become contaminated with a variety of microorganisms from the pods, laborers hands, insects, vessels used for transport etc.
  • Fermentation
    During fermentation complex chemical changes take place in both the pulp surrounding the seeds and within the seeds themselves, and the chocolate flavor is developed. The pulp surrounding the beans develops the color and flavor of the beans. Cleaning The beans are cleaned and can then undergo a form of thermal pre-treatment to separate the shell from the bean. One form of thermal pre-treatment uses infrared technology in which the beans undergo infrared radiation on a ‘ fluidized’ bed or vibrating conveyor. Water accumulates on the surface of the bean and bursts the shell.
  • Shell Removal
    The beans are then separated from the shells. Water is introduced many times in this stage to filter out shells, dirt, bugs and larvae. The water is recycled many times and then recirculated.
  • Grinding
    The nibs are ground to make cocoa liquor. There are two stages of the grinding process. In the first stage, the beans are ground using various methods and will produce liquid mass called cocoa liquor. There are two possible ways to continue to the second stage: either the cocoa liquor is further processed into cocoa butter and cocoa powder (usually only done with low-quality beans), or chocolate.
  • Pressing
    When the nibs are ground, the resulting liquid produced by the friction is called cocoa liquor. Giant presses squeeze cocoa butter from the liquor then refined.
  • Deodorizing
    Typically cocoa butter extraction is done through a solvent, then refined and deodorized. However, if it is extracted by any other method, a strong cocoa aroma will be present. If this odor is undesirable, the addition of a deodorizing process is necessary. This process is usually completed using superheated steam under a vacuum. The steam strips and distills volatile substances from the butter. This process takes anywhere from 30 minutes to 3 hours depending on the deodorization requirements.
  • Cooling
    The cocoa butter is cooled and filtered for any final particulate that might remain. It is then prepared for the storage drum.
  • Conching
    This two stage process (dry and liquid) involves the heating of the chocolate to a pre-determined temperature to add viscosity. It is also used to eliminate any unnecessary remaining moisture. Many times the following liquid stage necessitates the addition of cocoa butter.

We offer a wide variety of filters for Food and Beverage processes. Visit Eaton today to learn more about our Food and Beverage filtration products.