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Old 01-03-2016, 08:26 PM   #1
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Omit first gas reg.

I'm wondering if I can omit the first gas reg. on a dual tank system before the deverter valve and the dual stage reg. Worried about the line pressure going from curb side to the road side. Is the larger hose also rated for high pressure Hope everyone had a nice holyday Hal
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Old 01-03-2016, 08:53 PM   #2
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Not sure what you are asking? Do you have the 2 tanks on a trailer and you want to modify the system?
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Old 01-03-2016, 09:24 PM   #3
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I have a tank on each side, on the curb side with tank is a single stage reg. then line goes to road side into the diverter valve for the other tank and dual stage reg. The original owner replaced the curb side reg. probably with the wrong low pressure because I can't get enough gas pressure. gas is ok at the stove ; but when I turn on the furnace I see the stove flame go down as the furnace tries to light but will not ignite. I omitted the curb side reg. and every thing works good but sill wonder if the line going across is rated for the new high pressure since it went through the reg. before at low pressure. Thank's for the reply Hal
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Old 01-03-2016, 09:56 PM   #4
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Sorry, not familiar with your setup. However, if you have one tank line running across to the other tank that has the dual regulator (flip lever for either tank?) then I would not think there should be a regulator on the curb side tank---can't have two regulators in the same line far as I know. Not sure any of this helps, surely someone else will chime in who understands your setup. Most RV propane lines are made to handle all the pressure that will be in the tanks--it is downstream of the regulator that lower pressure can be used.
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Old 01-04-2016, 05:22 AM   #5
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Quote:
Originally Posted by Halwiseguy View Post
I have a tank on each side, on the curb side with tank is a single stage reg. then line goes to road side into the diverter valve for the other tank and dual stage reg. The original owner replaced the curb side reg. probably with the wrong low pressure because I can't get enough gas pressure. gas is ok at the stove ; but when I turn on the furnace I see the stove flame go down as the furnace tries to light but will not ignite. I omitted the curb side reg. and every thing works good but sill wonder if the line going across is rated for the new high pressure since it went through the reg. before at low pressure. Thank's for the reply Hal
We have the same setup. The regulator on the curb side is single stage rated at 30psi. The street side has no separate regulator. Both the curb side and the street side hoses feed into a 2-stage regulator at the diverter valve, which is located on the street side. I'll be watching this thread to see if anyone else has the same setup and what the reason for it is.
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Old 01-04-2016, 05:41 AM   #6
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I am having the same issues with drawing from the passenger side of the RV LP tank with the same setup you describe. LP Generators are new to me, and I did have the dealer look at why I could not start or run my Onan 5500 LP genset from the right side. They did replace both the regulator on the right as well as the two stage auto swap regulator on the left side.

I've read that you need to open the tank valves slowly and that a "dip" in the gas feed line (behind the genset box) could cause some settling of debris similar to a "p" trap in plumbing. I've also read that you need to wait "awhile" for the back pressure to build when using the passenger side tank.

I've since had mixed results starting and running the genset from the longer running passenger side line. My current Crossroads 2016 Carriage CG38SB is a recent purchase having come from a Fuzion 42' Toy Hauler with the same Onan 5500 but gasoline driven (and no complaints). Still trying to figure out why the shorter run tank works and the longer run doesn't take off as well. btw, I have swapped the tanks also just to be sure, but have not replaced any pigtails yet. The genset was installed by the dealer into the manufacturer "genset" ready housing. The pigtail connectors are green and not black, just in case that is a possibility.


I do have the 30psi regulator on the right tank also. Did you say you removed that regulator and the curbside is now working?
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Old 01-04-2016, 11:37 PM   #7
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Gas Reg.

Yes I did omit the curb side reg. -- Bought nipple end to go into line that crosses over to road side where I took off reg @ true value Everything works fine Hal 3500 ram diesel 2006 Hartland Landmark Hoping to go to Alaska this spring. Looking for Onan Gen to fit in my 36.5 Landmark which is prewired . Found switch on bedroom cabinet. Had same problems you did on turning on my furnace. turned on one burner on stove and Observed the flame go low when the furnace would try to light then burner would flare up because the furnace did not have enough pressure to light .
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