4200 Series Inline Filters - Aerospace Applications

Norman 4200 Series Inline Filters provide a compact lightweight filter for reliable economic protection of critical components. Commonly found within the Aerospace industry and often considered last chance filters, the 4200 Series inline filters offer an extraordinarily small footprint for extremely high pressures.

Norman 4200 Inline Filters are synonymous with Aerospace Filtration. 4200 Series filters have a high flow rate for body size and are commonly used in cryogenic applications by filtering liquid oxygen, helium, and hydrogen. Typically utilized in ground support and manned / unmanned flight applications, our 4200 inline filters are B31.3 compliant and feature a wide range of customizable configurations including 37° Flare with AS1098 seal cuts in male fittings, plus many more.

4200 Series Filter Details:

Port Type: Male/Female NPT, 37° Flare, AS1098, Male/Female O-Ring, Compression, Face Seal
Element Types: Stainless Steel Wire Mesh, Porous Sintered, Random Metal Fiber (Available Upon Request)
Filter Materials: 304/304L Stainless Steel, 316/316L S.S., Monel, Inconel, Nickel, A286 S.S.
Micron Rating: .2 – 200 µm (300 ABS) *Element Dependent
Temperature Rating: -320°F – 600°F
Accesories: Lockwire Holes, Backing Plates, Filter Disc

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


4200 – 1” HEX

4200 – 1 ¾” HEX


5 GPM / 150 SCFM

Port Size

1/8” – ¼” Pipe, 1/8” – 3/8” Tube, ¼” – 3/8” Compression, 9/16” Face Seal

3/8” – ½” Pipe, ½” – 1” Tube

Housing Material/Pressure Ratings

304 and 316 (6,000 PSI)

304 and 316 (3,000 PSI)

Element Materials

304 and 316 CRES 

Common Applications

  • Aerospace Fueling Services
  • Cryogenics
  • Feed & Fill Lines
  • PAO Coolant
  • Pilot Circuits 
  • Propellant Tank Flow & Pressurization Systems
  • Shipboard Radar Systems
  • Test Stands
  • Wellhead Control Panels

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