... (are mad the source request: Oxygen: Purity 99.6%, pressure 10Pa, current capacity 850 l/min Propane: The flame cuts ... gathering of gas control system complete set:including the pressure regulator valve, the pressure gauge, the trachea and the corresponding appendix, use ... installment, uses the high strength heat-resisting trachea, the fuel gas tempering installment, but fully guaranteed the air feed is ...