1/4" nylon hose

Discussion in 'InsideTopAlcohol.com Tech Questions' started by dragster156, Jun 29, 2019.

  1. dragster156

    dragster156 Member

    Joined:
    May 31, 2012
    Messages:
    120
    Likes Received:
    2
    I run the electromotion auto shift valve and will be moving the location making it easier to service the car. Currently it has all stainless lines. Instead of making all custom lines I am thinking of switching over to 1/4 nylon hose.
    With the B&J calling for 450lbs of pressure is there a better hose (can handle more pressure)that people use vs just the normal stuff we all used to run with out little air bottle for throttle stops etc??

    Just trying to eliminate any problems in that area.

    Thanks
     
    #1
  2. Mike Canter

    Mike Canter Top Dragster
    Staff Member

    Joined:
    Mar 10, 2004
    Messages:
    4,360
    Likes Received:
    118
    Most hydraulic shops or diesel supply shops carry a nylon line that is certified for air brakes. This line is the strongest you can get. I have also seen it in different color so you can color code the hookup
     
    #2
    dragster156 likes this.
  3. kosky racing

    kosky racing Comp Eliminator

    Joined:
    May 11, 2003
    Messages:
    670
    Likes Received:
    26
    The line you want is DOT approved the colors tell what its to be used for in industry all the same pressure rated- higher than what is needed for your use fittings should also say d DOT approved
     
    #3
    dragster156 likes this.
  4. greenracing

    greenracing Member

    Joined:
    Jul 2, 2008
    Messages:
    65
    Likes Received:
    9
    Looking at the same thing.

    Not sure that DOT gives you what you need. I looked at McMaster-Carr and the DOT tubing is rated at less than 200lbs. I looked at the Parker Air Brake tubing flier and it says that they are rated for a working pressure of 150lbs. I'm sure the burst pressure is higher, but it looks like it's not really intended for use at 400+lbs.

    McMaster does carry one style of tubing that is rated at 800lbs, but most of them are 300 or less.

    The bigger question is fittings - all the push-to-connect fittings seem to be rated for pretty low pressure.
     
    #4
  5. kosky racing

    kosky racing Comp Eliminator

    Joined:
    May 11, 2003
    Messages:
    670
    Likes Received:
    26
    not quite true the dot nylon is rated at 300 min. burst pressure there are also bras push to connect that are rated at the min.300 also this the highest push to connect rating-Max use pressure is rated at300lbs. Look up mid America all the brake nylon tubing is rated at1000lbs.
     
    #5
    Last edited: Jul 1, 2019
  6. kosky racing

    kosky racing Comp Eliminator

    Joined:
    May 11, 2003
    Messages:
    670
    Likes Received:
    26
    Parker-1120 nylon-1000#
     
    #6
  7. greenracing

    greenracing Member

    Joined:
    Jul 2, 2008
    Messages:
    65
    Likes Received:
    9
    Ah - there it is - finally found the right column in the right table! Thank you Mr. Kosky.
     
    #7
  8. tad1011

    tad1011 Member

    Joined:
    Oct 18, 2009
    Messages:
    171
    Likes Received:
    4
    The dot tubing has a lower rated pressure to keep the truckers from turning up the brake pressure. I use the dot air line from parker with my b and j with no problems. It has a burst pressure rating somewhere around 1000 pounds.
     
    #8
  9. Mike Canter

    Mike Canter Top Dragster
    Staff Member

    Joined:
    Mar 10, 2004
    Messages:
    4,360
    Likes Received:
    118
    Tad1011, not sure that is true according to a couple of air brake repair shops and hydraulic shops
     
    #9
  10. Nitro Madness

    Nitro Madness Super Comp

    Joined:
    Sep 14, 2003
    Messages:
    305
    Likes Received:
    6
    I would like to color code my air lines....anyone know where to buy Parker 1120 colored hose in less than 250' per roll? The black is available in 100' rolls but the colors are 250' or 500' minimum....
     
    #10
  11. Mike Canter

    Mike Canter Top Dragster
    Staff Member

    Joined:
    Mar 10, 2004
    Messages:
    4,360
    Likes Received:
    118
    Try hydraulic shops
     
    #11
  12. kosky racing

    kosky racing Comp Eliminator

    Joined:
    May 11, 2003
    Messages:
    670
    Likes Received:
    26
    Try Lawson products if you can find a salesman -
     
    #12
  13. kosky racing

    kosky racing Comp Eliminator

    Joined:
    May 11, 2003
    Messages:
    670
    Likes Received:
    26
    I believe NAPA also sells 100Ft. rolls
     
    #13
  14. kosky racing

    kosky racing Comp Eliminator

    Joined:
    May 11, 2003
    Messages:
    670
    Likes Received:
    26
    Add Big truck repair shops
     
    #14
  15. nitrowannabe

    nitrowannabe Member

    Joined:
    Oct 9, 2006
    Messages:
    355
    Likes Received:
    9
    Looks like black by the foot on Ebay.
     
    #15
  16. greenracing

    greenracing Member

    Joined:
    Jul 2, 2008
    Messages:
    65
    Likes Received:
    9
    #16
  17. MaineAlkyFan

    MaineAlkyFan Active Member

    Joined:
    Oct 8, 2006
    Messages:
    292
    Likes Received:
    32
    We have had colored lines blow out of the instant fittings. Never had it happen with the black lines. You can color code at the connection points with a ring of colored heatshrink also, letting you use the black line in bulk.

    Chris Saulnier - Team Tigges
    Mechanic Falls, Maine
     
    #17
    bandit496 likes this.
  18. Nitro Madness

    Nitro Madness Super Comp

    Joined:
    Sep 14, 2003
    Messages:
    305
    Likes Received:
    6
    I like this! I have plenty of the DOT black in stock.....and lotsa heat shrink tubing in assorted colors....thanks!!
     
    #18
  19. kosky racing

    kosky racing Comp Eliminator

    Joined:
    May 11, 2003
    Messages:
    670
    Likes Received:
    26
    We used colored line on all our fleet trucks and none blew because of color -all the same material-nylon
     
    #19

Share This Page