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Pressure protection valve

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Gumper, Jul 16, 2019.

  1. Jul 16, 2019 #1
    Gumper

    Gumper Road Train Member

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    This valve is leaking on my W900. I can push the red cap down which stops the leaking, but that’s obviously not how it works. Can’t seem to find one online that matches this one. Most the others are 1/2” inlet with 3/8” outlets. Those outlets look like 1/4” to me. Anyone have a part number handy for a replacement? Would like to walk into a store on the road, and grab one without taking it off to show the parts monkey.
    AA634501-33F5-49E1-8C90-CEAE33E8A881.jpeg
     
    Gumper, Jul 16, 2019
    Gumper, Jul 16, 2019
    #1
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  3. Jul 16, 2019 #2
    pushbroom

    pushbroom Road Train Member

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    Last six of the s/n?
    Ill look when I get to work tomorrow.
    Valve is a 90ish psi cutoff switch for accessories so if the line blows all the air in the tank doesnt empty.
     
    pushbroom, Jul 16, 2019
    pushbroom, Jul 16, 2019
    #2
    Bean Jr. and spsauerland Thank this.
  4. Jul 16, 2019 #3
    Gumper

    Gumper Road Train Member

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    752121. Think it feeds the air bags since they’ve been taking a bit longer than normal to fill.
     
    Gumper, Jul 16, 2019
    Gumper, Jul 16, 2019
    #3
  5. Jul 16, 2019 #4
    spsauerland

    spsauerland Road Train Member

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    West Harrison, In
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    Part Number is a 223-585 for the original GT Development. Some crosses are 032221 Velvac or 918302 Tectran or 401156 Sloan.
     
    spsauerland, Jul 16, 2019
    spsauerland, Jul 16, 2019
    #4
    Bean Jr., Gumper and pushbroom Thank this.
  7. Jul 16, 2019 #5
    Gumper

    Gumper Road Train Member

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    Butte, MT
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    You’re the man, thank you
     
    Gumper, Jul 16, 2019
    Gumper, Jul 16, 2019
    #5
    Bean Jr. and spsauerland Thank this.
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