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Topic: Air Tank Drain Valves---Success! (Read 838 times) previous topic - next topic

Air Tank Drain Valves---Success!

  I have a problem with the air tanks losing air. Once the weather started getting colder, I noticed that the auxiliary
  compressor would cycle on about every 30-45 minutes. It never did that before.
  I started checking for leaks and right away found that the 3 drain valves at the drivers side front tire and the
  1 drain valve at the rear tire were leaking.
 
  I would like to replace the valves with the one shown below--has anybody used this type of valve?
 
    Thanks--Jim

Update: I was able to replace the three shut off valves and push on air hose fittings and
  have eliminated the air leaks from that area.. Now the 120v compressor is quiet http://www.foreforums.com/Smileys/Solo/smiley.gif
Jim & Doreen
2003 U320

 "Too often I would hear men boast of the miles covered that day, rarely of what they had seen"
― Louis L'Amour

Re: Air Tank Drain Valves

Reply #1 –
Jim,
Looks like the bulkhead fitting leaking - not the drain valves.
Jon Harris
1995 U300 Unihome
Cat 3176
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Re: Air Tank Drain Valves

Reply #2 –
  Your right- they are leaking from that fitting but I was gettin bubble from the bottom of
  the drain valves even though they were closed.
  The old valves seem "sloppy" so I thought I would replace them when fixing the other leak.
Jim & Doreen
2003 U320

 "Too often I would hear men boast of the miles covered that day, rarely of what they had seen"
― Louis L'Amour

Re: Air Tank Drain Valves

Reply #3 –
Can't quite make out the label on the valve in your photo.  Be sure whatever valve you use is rated for at least 150PSI, which is the maximum system air pressure allowed by DOT regs.  Would also be nice, since these valves will often be "wet", to pick a quality valve made of corrosion resistant materials.
1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"

Re: Air Tank Drain Valves

Reply #4 –
  Hi, yes these are rated for 150psi. I don't know about their corrosion resistance.
  I will put them on and monitor their performance. 
              Thank You
Jim & Doreen
2003 U320

 "Too often I would hear men boast of the miles covered that day, rarely of what they had seen"
― Louis L'Amour

Re: Air Tank Drain Valves

Reply #5 –
Quote from: jtm2014 –
I would like to replace the valves with the one shown below--has anybody used this type of valve?
Yes, I discovered the OEM valves would leak intermittently and replaced them with similar looking valves like the ones you have pictured (brass body, stainless ball).  Did that about 2 years ago - they work quite well.  Mine are mounted directly on the two forward tanks (standard Grand Villa setup) so I don't have tubes and bulkhead fittings, but that all brass OEM valve looks identical.
John Fitzgerald
1991 U300 (SAI) Side Aisle Island Bed 40'
Detroit 6V92 with Allison Retarder
Meridian (Boise), Idaho

Re: Air Tank Drain Valves

Reply #6 –
I have looked all over and cannot find these drain valves on my 2001 U320 36' single slide. I think there is only one more plus the one near the rear tire on the driver's side.  Where should I look?

Roger
Roger Engdahl and Susan Green
2001 U320 3610 #5879 (Home2) - 2014 Jeep Cherokee or 2018 F150
Hastings, MN

Re: Air Tank Drain Valves

Reply #7 –
On mine, there is one at the rear DS wheel and one on the bottom of each of the front three tanks.  They are located near the center of the coach between the front wheels.

Rich
Rich and Peggy Bowman
2002 U270 3610 WTFS, build #5939--"Freedom"
2022 Jeep Grand Cherokee Summit 4xe
SMI AirForceOne brake system
PakCanoe 15

Re: Air Tank Drain Valves

Reply #8 –

  The three valves shown in the photo are on the drivers side wheel well, inside and about
  3/4 of the way down, forward of the left front tire.
  Don't know if the PO had them installed or if they are standard factory install.
Jim & Doreen
2003 U320

 "Too often I would hear men boast of the miles covered that day, rarely of what they had seen"
― Louis L'Amour