3000W Chinese Gensets Info.

gasser9 wrote:
The bevel on the "spud" tube in the block should bo oriented to the engine side ti create a vaccum to the regulator. Black pipe would be your best chouce, more resistant to abrasion & easier to run in a straight line & support along the frame. Galvanized can be uses for LPG also, (that ought to stir some stuff)

You can use anything you want - including bamboo poles. But, that does not mean it is what you should use.

The "thing" with galvanized and LPG is the possibility of small flakes of zinc in the galvanized coating that may be present inside the pipe that can cause damage to gas regulators and orifices if they should come loose. The same precautions are advised for compressed air lines.

Actually, this warning has always somewhat mystified me - especially on compressed air. Black iron has no internal coating and will oxidize (rust) quickly in the presence of moisture and oxygen. Of course, these are not suppose to be present in a NG or LPG piping system. But, both will be present in a compressed air system. Rust particles can also come loose and cause damage to fine components.

My take is use whichever piping - galvanized or black iron - you prefer but add an in-line filter before any regulators or small orifices. The filters run about $10 for 1/2" rigid pipe. Most any gas supplier should carry them.

P.S. I prefer to work with black iron and transition to soft copper where flexibility is needed. All RVs I have had the occasion to inspect use this system as well.