CAD Drawings The CAD drawings provided represent typical installation layouts. Please contact ONICON's sales office at (727) 447-6140 or email for assistance. CAD Drawing Description File Type To download file, right-click on the File Type link and select "Save Target As..." Insertion Turbine Flow Meter Installation .dwg version Insertion Turbine Flow Meter Piping Layout .dwg version Vortex Flow Meter Installation .dwg version System-10 BTU Meter Installation Layout .dwg version System-30 BTU Meter Installation Layout .dwg version Hot Tap Thermowell .dwg version