Laboratory Vacuum Piping

What kind of laboratory? H.S. chemistry? Bio-Medical? What other? The particular application and the gasses and/or liquids handled would determine materials and design standards required.

it all depends on the stuff you are carrying. Oxygen can not tolerate any combustible material in the line, oil, gaskets etc because at high pressure they can start to burn spontaneously. Inert gasses and air will have limits placed on them by the end use. Compressed air for divers cannot have any oil, etc.

Vaccuum...how high a vacuum? An ultra high vaccuum line must be made of stuff that will not outgas anything. The line must tolerate anything that it aspirates, so it is aspirates HCL the line must resist corrosion by HCL.

Vac lines for low vacuum are far more tolerant.

Lines might also need to be isolated due to cross contamination and you might need a separate pump for each of those??