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2 Regulators for Gen Air bags
Can anyone tell me why, or what the advantage is of having 2 air regulators for the air bags on my Generator? I have one regulator for the front 2 bags, and the other for the rear bags. I’ve had a few issues with one of the regulators holding consistant pressure, so I just replaced it.
Just wondering, do others have 1 or 2 regulators?
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18 Replies
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Jerry I only have one for all four air bags, I have check valve after regulator and then gauge and that’s all my air compressor is used for, are the gen air bags and to fill pressure tank for water system , I only turn on once in awhile, air bags are new so they hold air forever. Hope that helps!!!!!
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I only have one as well. I can not see the reason for two..?
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On mine I have a manual feed only, no regulator, no aux air supply.
Over time the front end will settle as the head is heavy. Top off the air and she will even out.
I can see the logic for heaving two regulators front/rear given the uneven weight distribution.
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That may be it Joe, the weight difference? I guess the Generator end could be heavier than the front of the engine itself. If air leaks down, the Gen end seems to be the first to drop.
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Jerry,
Just making sure that the regulator in the generator bay… both are same type. Being ones holding the dialed pressure with heat increase discharge.
This topic has been here before with an owner just replacing it with a standard regulator. Without the dischharge option lets just say it could be a mess.
Marathon uses suggested 25 psi single regulator. Also seperate discharge button mounted on top of engine.
AL
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Some have two regulators because of a big difference in weight between the two ends of the genset. If you have two then you should have one that is set to a higher pressure.
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Al if they are manual fill like mine was , two bags two fills , the air has no where to go if it gets hot , so what do you think?
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Uh oh, I replaced it with a generic from Home Depot.
Anyone know who has the heat sensitive type?
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The manufacture is SMC. Unless it dumps the hot air it will continue to build. Stress to bags etc.
I replaced my generator reg valve and grabed the wrong one. When I later looked at the pressure with generator in operation it had increased to 60-80 lbs.
Way too much for mini air bags.
I’ll get the number for you. Do you want a supplier name I used in KC. ?
AL
Peter,
Set your bag pressure cold at suggested PSI. Run your generator with door closed so the encloser gets hot.
If the PSI has doubled which I saw on my gauge you probably have the wrong regulator number. They look the same but it’s the inside guts that they change for heat applications.
I inspected mine when the generator bay was hot… only notice a slight increase 3-4lbs with correct regulator.
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Al,
I can find them locally with a part number and manufacturer name.
Thanks
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SMC is manufacture part number AR-20-N
This is the heat relieving part number and the latest regulator style.
Jerry…verified through my supplier in KC. Just in case I had logged the wrong number in my bus repair log.
I wrote the wrong mini bag pressure on Marathon it’s 25 psi …not 20 psi
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Each converter seems to have pressure settings unique to the coach. All my coaches from Liberty have been 14 PSI and that works very well, but as Al points out Marathon has a different spec for pressure.
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Mine are 25 psi for the bags
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Thanks Al,
My regulators are located outside the Gen quiet box, away from heat. But, the air bags are probably at least 160 degrees or so. I’ll check them with a heat gun next time it’s running just to see.
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Jerry
My XL Vantare is very similar to yours, 2 regulators outside the generator box. I had to replace one couple months ago. The original was leaking, Mfg = Master Pneumatic Model R55M-2. Got an identical replacement from Adams Air & Hydraulics in Tampa for $21.50. Must be the different weight on the generator end. I thought about consolidating to a single regulator but actually easier just to replace the leaker.
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