Gas Pipe & Valve Size

Discuss roast levels and profiles for espresso, equipment for roasting coffee.
Capuchin Monk

#1: Post by Capuchin Monk »

I noticed that many have set up their needle valve with 1/4" connections for gas heated roaster. Is 1/4" sufficient for valve and pipe connections? I'm asking because my LP gas hose is 3/8" and wondering if reduction to 1/4" would cause any insufficiency for 10,000 BTU/h gas burner.


#2: Post by nash »

I don't think it would be an issue. The two burners I have both have an orifice size of about a millimeter. I imagine that the connection would have to get close to that size for it to make a difference in gas flow.

Team HB

#3: Post by ira »

Using this: ... tural).pdf

It looks like a smooth piece of 1/4" copper pipe up to 50' long should be able to supply enough gas for a 10,000 BTU burner. But there is no downside to 3/8".

Capuchin Monk (original poster)

#4: Post by Capuchin Monk (original poster) »

Thank you all for the input. I went with 3/8" all the way since the gas line and fitting are already 3/8". I did a test run today and it works well. The meter maxed out and beyond when I turn the heat all the way up but I don't use it that high so it's no issue.