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Old 07-31-2021, 12:18 PM   #1
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Secondary Propane regulator

Question: I have a Fairview GR-9984 High Capacity RV Propane Automatic Changeover Regulator on my Ď17 Montana 5th wheel. This regulator is on drives side and of course both tanks feed into it. On opposite side tank there is another single stage regulator. Iíve replaced once because it leaked. Now the replacement regulator leaks. I donít understand the need for a second regulator at the opposite side tank when both tanks feed int the dual stage primary regulator. What is the harm in removing the single stage regulator at the other tank if it goes into main dual stag regulator?
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Old 07-31-2021, 01:21 PM   #2
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By Law you have to have that 30# reg ....required when high pressure hose if over 5' long

Takes Cylinder pressure (100-250 psi) down to 30 psi to feed auto changeover reg on opposite side
Reason....
High pressure over that long of length can condense from vapor to liquid
Liquid propane is dangerous and will destroy to Auto Reg and any appliance downstream if liquid should pass they Auto Reg

YES you need that 30# reg on that cross-over line

Marshall or MB Sturgis make 30# replacement regs
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Old 08-20-2021, 04:07 PM   #3
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Ok yet another problem. I replaced my Fairview regulator with a Sturgis. Now the problem is when I turn tank off at the Sturgis regulator and unhook to refill tank propane comes out from the coach side. Is there supposed to be a check valve in the regulator? I've replaced 2 Fairviews and got new hoses too. I know there are check valves at the 2 way main valve. Did I possibly remove the check valve along with the leaking Fairview regulator, or is there no external check at that regulator?
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Old 08-20-2021, 08:00 PM   #4
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Quote:
Originally Posted by bighamstoy View Post
Ok yet another problem. I replaced my Fairview regulator with a Sturgis. Now the problem is when I turn tank off at the Sturgis regulator and unhook to refill tank propane comes out from the coach side. Is there supposed to be a check valve in the regulator? I've replaced 2 Fairviews and got new hoses too. I know there are check valves at the 2 way main valve. Did I possibly remove the check valve along with the leaking Fairview regulator, or is there no external check at that regulator?
Did you move the propane change-over regulator handle and point it to the installed tank?
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Old 08-21-2021, 02:10 PM   #5
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Did you move the propane change-over regulator handle and point it to the installed tank?
No, never had to before. I installed a check valve at the secondary regulator, that took care of the issue. Don't have to shut off system to replace tank.
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