Gas symbols
Drawing labels, details, and other text information extracted from the CAD file (Translated from Portuguese):
Grill, fireplace, Pressure reducer with built-in safety, Pressure reducer without built-in safety, Automatic inverter, Earth connection, Manual inverter, Built-in oven, transition, filter, Hight point, Water heater, Gas meter, Ball valve, In-line cutting valve, Safety valve in line, Change of pipe diameter, Butterfly valve, Floor boiler, Wall boiler, Miter valve, Electromagnetic valve, Liquid drain, cooker, Embedded pipe embedded or buried, Pipe inclination, Mango or forra, View tubing, Column always ascending