Reverse gas flow?

Alshymer

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Hi
Due to a severe shortage of LPG in the south west, I am considering having to buy a Calor gas bottle.
Is it possible to temporarily use a regulated Calor bottle flowing backwards through a barbecue exterior fitting, after turning off the main supply of course, rather than dismantling my Autogas 2000 system?
Would it then operate all equipment in the van?
Thanks
Alshymer
 
Couple of things to be on the safe side.

It you're using an old regulator / hose check them before use.

Make sure the supply to the BBQ socket is turned on at the internal manifold.

Turn the Autogas off at the bottles.

Make sure the Calor is securely fixed in an up right position for travel and the area is ventilated.

Good luck getting a Calor Bottle, these are also in short supply.
 
Derekoak said:
As qn alternative If you have an lpg fill in the side of your camper. "Gas it" for sure does a flexible hose to temporarily connect a propane bottle to it, so you could then feed in gas from the normal place.
Click to expand...

Interesting idea, I've never heard of this before.

Presumably this connection wouldn't use a separate regulator.

The hose would have a bottle connector on on end and a UK fill connector on the other.

Do you have a link to hose?
 
r4dent said:
Interesting idea, I've never heard of this before.

Presumably this connection wouldn't use a separate regulator.

The hose would have a bottle connector on on end and a UK fill connector on the other.

Do you have a link to hose?
Click to expand...
One of these I think.


www.outdoorbits.com

Home - Outdoorbits

Flash Sale! Featured Categories Interior Exterior Appliances
www.outdoorbits.com www.outdoorbits.com

Cheers

H
 
r4dent said:
Interesting idea, I've never heard of this before.

Presumably this connection wouldn't use a separate regulator.

The hose would have a bottle connector on on end and a UK fill connector on the other.

Do you have a link to hose?
Click to expand...
 
Hi
The regulated bottle would have the normal pipe to the bottle and an exterior fitted barbecue connector on the other.
 
r4dent said:
Interesting idea, I've never heard of this before.

Presumably this connection wouldn't use a separate regulator.

The hose would have a bottle connector on on end and a UK fill connector on the other.

Do you have a link to hose?
Click to expand...
To all your questions yes.
It seems similar to winks link. I nearly bought one when fitting my underslung tank so I could pressure test it with the pressure of a propane bottle before filling at a garage.
Although the link says it will not transmit liquid gas, physics says that if the external bottle is warmer and is inverted it will empty into the fixed tank, unless there is some complex gas yes /liquid no valve hidden in the hose. The Gasit one looked simply as you describe. Not that I suggest such a course.
 
I bought the Gaslow Reserve Cylinder Connection Hose at the time in 2015 it was £16.50.I used it to purge air and check for leaks prior to filling at an LPG station.Here it is connected to the german bottle that came when I bought the motorhome in germany:
bottle connected as spare (6).jpg
 
Derekoak said:
Although the link says it will not transmit liquid gas, physics says that if the external bottle is warmer and is inverted it will empty into the fixed tank,
Click to expand...
Yes placed upside down and higher than the fill point of the van left in the sun most of bottle will drain into tank in a few hrs
 
Alshymer said:
Hi
Due to a severe shortage of LPG in the south west, I am considering having to buy a Calor gas bottle.
Is it possible to temporarily use a regulated Calor bottle flowing backwards through a barbecue exterior fitting, after turning off the main supply of course, rather than dismantling my Autogas 2000 system?
Would it then operate all equipment in the van?
Thanks
Alshymer
Click to expand...
Do you have refillable bottles or an underslung tank? If bottles there is nothing stopping you removing one and having the Calor in its place. It’s what I used to have before I got a second refillable. That way you use the bulkhead regulator and just need a Calor pigtail
 
Alshymer said:
Hi
Due to a severe shortage of LPG in the south west, I am considering having to buy a Calor gas bottle.
Is it possible to temporarily use a regulated Calor bottle flowing backwards through a barbecue exterior fitting, after turning off the main supply of course, rather than dismantling my Autogas 2000 system?
Would it then operate all equipment in the van?
Thanks
Alshymer
Click to expand...
Where in the southwest are you
 
Going back to the original question, I do exactly that when I go shell Island for a weekend.
8 years ago I just got a fresh refill bottle the week before I fitted a gas-it unit, so had this full bottle in the garage for 6 years not knowing what to do with it, then I thought I would do exactly that, I took the feed pipe off the BBQ and with a regulator connected this bottle to the external BBQ point, I only take the bottle with us when I know i will be stationary for a couple of days, and we have just got our 4th weekend out of it this week.
The precautions i do take is, I turn off my Gas-it bottles and after I've connected up I spray a soapy solution over all the connections, if it blows bubbles it's got a leak and needs securing.
 
molly 2 said:
Would one those connectors top up a low gassit under slung tank ??.
Click to expand...

Short answer is NO.

The gas in a bottle or tank is at high pressure.
Any gas that has been though a regulator is at low pressure.
Gas does flow from low pressure to high pressure.
 
molly 2 said:
Would one those connectors top up a low gassit under slung tank ??.
Click to expand...
If you are asking about the hose I mentioned that connects to the fill point, then yes. The right way up it will feed gas and whether the propane bottle or the lpg in the tank was used would depend on which was warmer. That causes the bottles to equalise temperature quite quickly.
If the propane was inverted the propane liquid would fill the underslung tank , (if the propane was warmer, than the lpg), until the volume safety float valve shut off. If the propane got equal in temperature before that point it would need to be warmed again. Say a bath of warm water or the sun.
Transferring liquid does not equalise the temperature anywhere near as much as transferring gas as the temperature drops due to the volume expanded. There are many litres of gas in a litre of liquid.
 
r4dent said:
Short answer is NO.

The gas in a bottle or tank is at high pressure.
Any gas that has been though a regulator is at low pressure.
Gas does flow from low pressure to high pressure.
Click to expand...
As I understand the connection pipe would fit directly on the gas bottle , the pressure would be regulated by the on board regulator. So bottle and tank would be high pressure, or am I missing something.the photo shows no bottle regulator.
 
molly 2 said:
As I understand the connection pipe would fit directly on the gas bottle , the pressure would be regulated by the on board regulator. So bottle and tank would be high pressure, or am I missing something.the photo shows no bottle regulator.
Click to expand...
the photo shows no regulator and the hose attaches to the fill point. So it is as I said.
 
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