Hi everyone
I have just purchased a 2010 Swift Challenger 480 which has the new gas regulations requiring all appliances to run with 30mb pressure.
To avoid having to throw away (yet more environmental waste...) my existing Gaslow metered regulators I have devised the set up shown in the attached diagram.
Hi Jeff. I don't know, I'm no expert. But I believed all propane equipment was designed to work on 37mb. Certainly on my old van, the appliances are designed to work on 28mb butane or 37mb propane.
Theres no reason why it shouldn't work, all you can do is try it, it will be safe to do so. 30mb bulkhead regulators can work with both butane or propane.
There is a reason it might not work; a regulator requires a certain pressure drop to function. You are only giving it 7 mBar which may be far too low for it to operate properly and achieve an adequate through put.
I also cant understand why you want to as you have a regulator designed to work from the input vapour pressure of the gas, why strangle it to just 37 mBar?
No it will not work correctly, the bulkhead reg is designed to take bottle pressure, & regulate to 30 mb that set up is putting 37mb into a reg designed to take bottle pressure, wont work ,not safe. Please don't mess with gas, your putting yourself and others in danger.
thats set up is safe but as metz has said the gas pressure at the bulk head will be to low to work this regulator correctly,
can you not just bypass the bulkhead requlator, as you will already have regulated the pressure from the bottle reg's, my caravan used to run this way as it has never had the bulk head one fitted though.
would any of these modifications distroy your warrenty?
i will say make sure you know what your doing with the gas and make sure you test it for any leaks.
could you not just sell your old reg's on ebay or local paper
Sorry, it won't work as has been pointed out by others as the bulkhead mounted regulator will not operate in steady-use conditions feeding a burner ring say, as the upstream pressure to it will only be 37mbar; it will need bottle pressure to lift the internal flow element to work properly.
The fact that the new design regulator on newer vans (post 2005 I think) is operating at only 30mbar output pressure will also certainly mean that the burner units (jets etc on the appliances) have been tested are adjusted/set/selected to operate at this 30mbar pressure. I made asimilar query a while back and was informed that to simply use the old pressure output (i.e. 37mbar) and feed this directly into the appliances would be "unsafe" and would definitely affect the warranty and also my insurance would potentially by null and void in event of a gas related incident.
I would therefore forget this scheme and try to sell these on say Ebay or other place as there may be somebody running an older van who needs a working regulator of the older style (pre 2005??)
------------- Have wheels, will travel.... with or without the wife!
..& Yet I had an Eriba with a built in regulator inside the cupboard & I used Campingaz bottles with regulator on bottle, ie 2 regulators & it worked ok. As I said, try it. It certainly won't be unsafe, how could it be?
Had a read of Tentz last post and you could, I suppose give your scheme a go and I may be proven wrong and it might well work but, saying this I would definitely keep the 30 mbar bulkhead regulator in the line feeding the onboard appliances, as your sketch shows.
If it does work satisfactorily, then you will still be able to see your bottle levels using the gaslow regulators and also be sure that you are not putting too high a pressure to your appliances. I know 7 mbar doesn't sound a lot in pressure terms i.e. 37 - 30, but it is 23.33% higher, which may affect the appliances in the way they burn the gas.
If there were some way you could get a definitive statement that all the appliances in your van were capable of using propane gas supplied at 37mbar then I presume you would then be safe to bypass the bulkhead regulator. If your proposed scheme did work you will be fine anyway.
------------- Have wheels, will travel.... with or without the wife!
Quote: Originally posted by kevinbfg on 27/3/2011
If there were some way you could get a definitive statement that all the appliances in your van were capable of using propane gas supplied at 37mbar then I presume you would then be safe to bypass the bulkhead regulator.
Well for years appliances were fitted with a single common jet that lived with 28mBar of butane and 37mBar of propane with no ill effect. So if its now fitted with a jet that copes with 30mBar its hard to see giving it 37 mBar of propane will do any harm.
Still find the concept as originally posted has no attributes, greatly reduces reliability. And I suspect it will choke the flow as the 30mBar regulator's first stage is not working at its designed input pressure. I don't see it as dangerous just pointless.
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Topic: Gas Connections
