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What the name of this valve? (pictures)

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Shawn19, Apr 6, 2025.

  1. Apr 6, 2025 #1
    Shawn19

    Shawn19 Light Load Member

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    Apr 20, 2019
    0
    Can anyone tell me what the name of this valve it on a freightliner Columbia 4 service brake line connected to it it leaking air on the bottom when I set on the brake I need to know the name
     

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    Shawn19, Apr 6, 2025
    Shawn19, Apr 6, 2025
    #1
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  3. Apr 6, 2025 #2
    nikmirbre

    nikmirbre Road Train Member

    5,376
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    Jul 27, 2011
    High Point NC
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    I can’t think of the name of it right now, I have the box in my side box, I’ll check in the morning but, I bought mine from a dealer for 60 something dollars…
     
    nikmirbre, Apr 6, 2025
    nikmirbre, Apr 6, 2025
    #2
  4. Apr 6, 2025 #3
    Shawn19

    Shawn19 Light Load Member

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    Apr 20, 2019
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    Really $60 I replace one years ago on a different truck as I remember it was close to $200
     
    Shawn19, Apr 6, 2025
    Shawn19, Apr 6, 2025
    #3
  5. Apr 6, 2025 #4
    xsetra

    xsetra Road Train Member

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    Aug 21, 2011
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    ABS valve. I think
     
    xsetra, Apr 6, 2025
    xsetra, Apr 6, 2025
    #4
  7. Apr 7, 2025 #5
    201

    201 Road Train Member

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    24,631
    Apr 16, 2014
    high plains colorado
    0
    Air brake relay valve, I believe. Used to be a pancake inside. It takes applied air from the brake pedal and splits it to the individual brakes. The trailer has one too.
     
    201, Apr 7, 2025
    201, Apr 7, 2025
    #5
    Deezl Smoke Thanks this.
  8. Apr 7, 2025 #6
    Big Road Skateboard

    Big Road Skateboard Road Train Member

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    May 2, 2021
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    Quick release valve
     
    Big Road Skateboard, Apr 7, 2025
    Big Road Skateboard, Apr 7, 2025
    #6
    Rideandrepair and ElmerFudpucker Thank this.
  9. Apr 7, 2025 #7
    bjytech

    bjytech Light Load Member

    229
    207
    Nov 9, 2013
    Ohio
    0
    What you have there is a Bendix SR-7 spring brake valve.
     
    bjytech, Apr 7, 2025
    bjytech, Apr 7, 2025
    #7
    pushbroom and Rideandrepair Thank this.
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