Industrial Cone / Witches Hat Filters

For those applications needing more than the drop-in, off-the-shelf wiches hat filter, Norman Filter Company manufactures industrial cone/witches hat filters for systems using 4” to 16” pipe. NFC's cone filters utilize a proprietary support structure, featuring all TIG welded construction for superior durability. NFC cone filters utilize wire mesh or random metal fiber (RMF) filtration media for superior durability and cleanability. Our cone filters feature a customer-selected internal/external support cage which is ideal for forward, reverse, and back-pulsing flow applications

NFC Cone Filters are manufactured with a matching flange which alleviates the need for pressure vessels or custom housings. Flanged Norman cone are attached to ANSI/ASME 16.5 flanges for easy alignment and installation in new and existing pipelines.

Pleated media in the Norman cone filter increases dirt-holding over t-type filters and standard mesh-wrap drop-in withces hat filters. Norman Cone Filters ensure less frequent changes, over longer periods reducing system downtime. The pipleline-integrated footprint of the cone filter eliminates the need for the bowl clearance of t-type filters, therefore adding filtration capability for hard to reach locations.


Cone /Witches Hat Filter Details:

Micron Rating: 1um (wrap), 3 - 2,000µm (pleated, absolute)

Cone Sizes: 4” to 16”

Element Materials: 316L Stainless Steel, Monel, Nickel 200, Stainless Steel

Filtration Meda Types: Random Metal Fiber, Pleated Wire Filtration Mesh

Flow: In-to-Out, Out-to-In, or Bi-Directional

Media/Fluid Types: Liquid or Gas Services

Operating Pressure: 0 – 6,000 PSI (extremely low-pressure drops)

Mounting Options: ASME B16.5 Flange*

Accessories: Pressure drop ports


If any of our catalog product does not meet your requirement, we frequently customize filter elements and housings to meet your needs.

*Hub and clamp style (Grayloc®, Vector Techlok®, TPC, etc.) and drop-in cone filters are available as custom product only.




Industries Served

Common Applications

  • Aerospace Ground Support Equipment
  • CNG Pressurization Skids
  • CNG Transfer Systems
  • Compressed Natural Gas (CNG)
  • Compressor Air
  • Cryogenic Filtration
  • Downhole Drilling
  • Methane Offloading

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