Discussion:
Impco J series primary valve failure

Hello Alll,
Has anybody solved the problem of primary valve bar bending and seal failing on Impco 'J' series Vapourisers.
Original impco parts kit used, converter changed. The repair lasts up to 6 weeks the truck is a Daewoo with a Hercules 1404 engine gas bottles supplied ready filled.
Thanks
fred
  • Posted 25 Jun 2010 17:16
  • By fred
  • joined 8 Apr'09 - 16 messages
  • stafford, United Kingdom
Showing items 1 - 9 of 9 results.
I agree with bruce_c,
the Cobra is just a little more expensive, but it will do the trick, we sell Cobra's 10 - 1 vs. the model J
  • Posted 25 Oct 2010 06:13
  • By rrforklift
  • joined 3 Sep'04 - 8 messages
  • Ontario, Canada
Faizal Jamal
R&R Forklift Inc
use the Cobra!
  • Posted 14 Aug 2010 07:52
  • By bruce_c
  • joined 28 Jul'10 - 52 messages
  • Missouri, United States
This is applied when the connection and valve directly into the bottle, or when we have the ideal regulator, - (valve to the bottle 36 mlBar). when the bottles we buy in distribuidr site. the filling is regulated in the respective regulator according to the manufacturer and distributor of the bottle. attention should always ask the same information so that everything goes well and we do a good job.
  • Posted 4 Aug 2010 09:29
  • By AMartins
  • joined 8 May'10 - 107 messages
  • vila nova de gaia, Portugal
hello guys
these situations as elsewhere, I do use a pressure regulator, which then tuned to the maxima and minima, lay at the entrance next to the link with the bottle. This allows the pressure will not damage equipment, and... also slightly reduces the consumption. tuning with reducer applied and the maximum acceleration. Within the norms of acceleration.
  • Posted 4 Aug 2010 09:09
  • By AMartins
  • joined 8 May'10 - 107 messages
  • vila nova de gaia, Portugal
yes it does
  • Posted 26 Jun 2010 22:04
  • By Prentice
  • joined 25 Jun'08 - 600 messages
  • Ontario, Canada
Does the Cobra have a different primary valve?
  • Posted 26 Jun 2010 21:09
  • By fred
  • joined 8 Apr'09 - 16 messages
  • stafford, United Kingdom
just a thought the machines we had the issues were also Deawoo and Cats with the the herc 1404 solinoide lock offs
  • Posted 25 Jun 2010 22:42
  • Modified 25 Jun 2010 22:44 by poster
  • By Prentice
  • joined 25 Jun'08 - 600 messages
  • Ontario, Canada
We had this issue back in the winter. We found that the drivers were running the lines out of propane at the end of the shift. they would turn off the tank and run the engine full throttle.........or sometimes the propane companys might overfill the tank, when they opened the tank it was to much pressure. We have advised to turn the tanks on/off slowly and don't run the engine at full throttle to drain the lines........so far no problems......knock on wood. Hope this helps
  • Posted 25 Jun 2010 22:33
  • By Prentice
  • joined 25 Jun'08 - 600 messages
  • Ontario, Canada
There was a discussion about this a while back and maybe it has to do with the electric lock off valve that is used on the Daewoo instead of the Impco vacuum one. It seems to be a common problem. There was no real answer other than the lock off and maybe when the tank is full the pressure may be higher than normal and when the lock off opens quick there is a pressure surge.
  • Posted 25 Jun 2010 20:18
  • By mrfixit
  • joined 11 Dec'08 - 1,434 messages
  • New York, United States

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