NG not enough energy to roast on IR stove?

[Igneous88]

I e-mailed him back and told him I was having trouble sourcing it and if he could give a price, what would it be.  We will see what he replies with.

[SusanJoM]

Good for you ! ! !

[trumz]

Try looking on caravan or motorhome websites.

[hankua]

I think you can find this sort of item as an adjustable pressure regulator, that would be used on a fish cooker or beer brewing. They may be sold by psi instead of water column.

1psi = 6.89kPa so there is a risk of blowing out the pressure gauge. If you end up with one, once it's set with the adjustable knob; leave it alone. Without a pressure gauge on the regulator, your going to have to work carefully with the initial setup.

But if you've got a 7kPa gauge, then a 1psi fixed regulator might just be the solution.

[SusanJoM]

If I were using a perforated drum and trying to roast full pound loads I would get a gauge that would allow for more than the 3.75 kPa on my current Dwyer gauge.

[Igneous88]

That's good to know.  Dwyer has the 0-6 kpa gauge (LPG4-D8222N).  Would you probably go with that?

[edtbjon]

A 50mBar regulator will give you 5kPa. Now, that is a heat setting that you'll probably only need for full 500g charges in the beginning of the roast. (Around or after DE I personally lower the gas pressure to around 2kPa or so...) For my normal 400g charges I use 4kPa, which is very close to the 3.75 max on some of the original gauges. What I'm trying to say here is that the original gague will not break if you give it 5kPa, it will just be above the max. The setting for 5kPa is easy to find. Just open up the needle valve... 4kPa is just a tad above the max reading on the gague, so that is easy too.
On the other hand, a year ago (or so...) my original gague broke down and I had to quickly find a new one, which I by pure chance managed to source locally. That new gague cost almost as much as the burner, but it was a very nice upgrade. (I was about to press the "Buy" button for a Dwyer, but decided to run one more search. That cost me quite a few kronor (local currency), but I had the gague the same day instead of having to wait for say 3 weeks... I was out of roasted coffee too...)

[SusanJoM]

That's good to know.  Dwyer has the 0-6 kpa gauge (LPG4-D8222N).  Would you probably go with that?

If that is the next increment after their 3.75, then yes.