"Bob Pietrangelo" wrote:

How strange. Maybe the pressure is lower with LP gas?

the pressure is 2-3 times higher than NG

After the regulator? I mean, what am I missing here?

It's a fact that LP is almost double the BTU content of NG per cubic foot.
Reducing the orifice size for an LP fueled burner would bring the burner down to
the same heat output. Why would a manufacturer bring it even lower?