Jerry, thanks for the reply, but the question I really have is whether or not there is a difference between propane and Natural Gas systems in the requirements for sediment and/or drip legs.
Also, I see sediment trap and drip leg used interchangeably referring to the same design of trap. Do you know of any diagrams or specific description that would explain the difference between the construction and application of the two?

On the clearance issue, I see from the Fuel Gas diagrams, etc. there are distance requirements for propane storage tanks but they fail to mention regulators. Do you have a reference or source for the 3' rule you mention?
Thanks!
Jim

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Jim Luttrall
Mr. Inspector.net, Inc.
Allen, Texas 75002