Cartridge Filters: Housings – Stainless Steel
Cartridge Filter Housings – Stainless Steel
Cartridge Filter Housings can be steel or plastic. In general steel housings are more readily utilized when the applications require more than one cartridge in the housing. Special duty plastic housings are available which have more than one cartridge for chemical compatibility issues when metallic housings are not appropriate. See Cartridge Filter Housings – Plastic.
Factors to Consider when selecting a Filter Housing
Captured O-Ring Seal
Type of Cartridge Seal
For high purity cartridge applications, where the filtration level is 1 micron or better, we recommend that you use a cartridge with a double O-Ring seal. This is either a 222-O-ring or a 226-O-Ring with a locking tab. Pleated styles can be seen on the chart on this link: Pleated Styles.
Inlets and Outlets
The second primary factor are the Inlet and Outlet sizes and types of connections. There are NPT, flanged and sanitary connections available to match up with your in house plumbing.
Method of Sealing Housing
If the Housing has to be opened frequently, the fluid is viscous, and if the contaminant is sticky and messy, we recommend a Captured O-Ring Housing Seal.
For low level of clean contaminants and/or infrequent openings (once per week or less), the lesser sealing methods such as captured clamps can be used.
The Multi-Round Housing photograph is a sanitary stainless 12-round by 3-high housing with 3″ Sanitary Tri-Clamp fittings.
Diameter of Cartridge
This is an often overlooked factor in considering a housing. Traditionally Industrial Housings for heavy and severe high viscosity chemical and other services have been designed for 2.5 Inch OD cartridges. Cleaner applications have generally utilized up to 3.0 Inch Cartridge ODs.
Other Factors to Consider:
- Length Of Cartridge
- Method of Sealing Cartridge: O-Ring or Knife-Edge
- Inlet & Outlet Pipe Sizes: Flanged or NPT
- Materials of Construction: Metallic, Plastics or Fluoropolymer
- Pressure and Temperature Requirements: Non-Code or Code
- Finish Levels: Rough Castings (Minimal Grinding); Ground Smooth, RMA Sanded; Ground Smooth, RMA Sanded & Electropolished
Sanitary Housing
Sanitary Housings are almost always 316 SS and seal with a double 222 or 226 o-ring and locking tab as its method for sealing the cartridge. Frequently the housing has a sanitary vent port.
Housing Internals Explained
You can see the deflection plate on the side of the housing which distributes the incoming water flow more evenly inside the housing. See the photo of a single cup and post assembly. The hole in the center is 1″ and takes the filtered water down and out of the housing. The cup is the upright section which not only “knife-edge” seals flat gasket cartridges but also is the right size to accept double 222-O-Ring cartridges.(See Cartridge Styles for more information on Cartridge Types).
Finally, the hole in the center is also the right size to accept centering posts for cartridge lengths over 10″.
The basic factors in determining the size and configuration of the housing are flow rate – Inlet and Outlet Size, fluid to be filtered, micron level desired and temperature and pressure. With these factors in mind, we can guide you through the rest.
Links:
- Cartridge Filters/Industrial Cartridge Filters
- Stringwound Cartridge Filters
- Spun Bonded Cartridge Filters
- Carbon Cartridge Filters
- Cartridge Filter Housings – Stainless Steel
- Cartridge Filter Housings – Plastic
- Capsule Filters
- DE Filter or Lenticular Filter
- Pleated Cartridge Filters – High Purity
- Pleated Cartridge Filters Light Industrial
- Bag Size Pleated Cartridges
Call us at 603-434-9577 or contact us for more information.