OBXcamper wrote:
Interesting.... I've used the exact hose I linked to, with black knob, many time at hunt camp with a verticle tank on the ground.(I already had the hose to run a portable heater). I also used the "steak saver" adapter as linked. Never had a problem running the furnace. Maybe I just got lucky. Thanks for pointing that out though as I don't like posting bad info.
Quite possible, what you were running, didn't have the demand to over task the flow from the black knob. Industrial term for that knob is ACME nut.
The black one is rated for 70,000 BTU's. The green one is rated for 200,000 BTU. Red one is rated for 400,000 BTU.
Here's a link to a green one on Amazon.