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Key Features

  • Accommodate Requirements Such as Fire Suppression Systems, Hydraulics, and other Utilities
  • Honeycomb Waveguide Insert Option Available for High Frequency or Gaseous Applications
  • Dielectric Unions are Available to Maintain Isolation to the Ground
  • Download PDF Datasheet
  • ETS-Lindgren's Waveguide Feed-throughs are available in most sizes for water, gas, or air. Specially designed waveguide feed-through assemblies are used for transporting non-conductive gases or liquids into an enclosure.

    Specifications
    View the Waveguide Feed-through (Pipe Penetrations) technical specifications below

    Physical Specifications

    Waveguide Feed-through Part Number
    With Dielectric Option Part Number
    Nominal Pipe I.D. Length
    Installation Hole Size
    551060
    551084
    1.27 cm (.5 in)
    15.24 cm (6 in)
    2.22 cm ( .875 in)
    551061
    551085
    1.91 cm (.75 in)
    15.24 cm (6 in)
    2.86 cm ( .125 in)
    551062
    551086
    2.54 cm (1 in)
    15.24 cm (6 in)
    3.49 cm (1.375 in)
    551063
    551087
    3.175 cm (1.25 in)
    15.24 cm (6 in)
    4.46 cm (1.75 in)
    551064
    551088
    3.81 cm (1.5 in)
    15.24 cm (6 in)
    4.92 cm (1.9375 in)
    551065
    551089
    4.08 cm (2 in)
    20.32 cm (8 in)
    6.35 cm (2.5 in)
    551066
    551090
    6.35 cm (2.5 in)
    20.32 cm (8 in)
    7.30 cm (2.875 in)
    551067
    551083
    7.62 cm (3 in)
    30.48 cm (12 in)
    9.21 cm (3.625 in)
    551068
    551091
    8.16 cm (4 in)
    40.64 cm (16 in)
    11.75 cm (4.625 in)

    For circular waveguides:
    fc = c/3.412r

    where:
    fc = cutoff frequency
    c = speed of light, 1.181 x 1010 in/s
    r = radius of circular waveguide in inches

    General Rule of Thumb:
    For circular waveguides, make sure the waveguide length is at least four times the diameter.

    Electrical Specifications

    Diameter of Waveguide
    Frequency Cutoff
    1.27 cm (.5 in)
    13.8 GHz
    1.91 cm (.75 in)
    9.2 GHz
    2.54 cm (1 in)
    6.9 GHz
    3.175 cm (1.25 in)
    5.5 GHz
    3.81 cm (1.5 in)
    4.6 GHz
    4.08 cm (2 in)
    3.5 GHz
    6.35 cm (2.5 in)
    2.8 GHz
    7.62 cm (3 in)
    2.3 GHz
    8.16 cm (4 in)
    1.7 GHz

    For circular waveguides:
    fc = c/3.412r

    where:
    fc = cutoff frequency
    c = speed of light, 1.181 x 1010 in/s
    r = radius of circular waveguide in inches

    General Rule of Thumb:
    For circular waveguides, make sure the waveguide length is at least four times the diameter.