Supply 5KW Beijing principle diffusion pump electromagnetic heater manufacturers diffusion pump: low vacuum condition caused by the preceding stage vacuum pump, the heat pump silicone oil, so that boiling heat evaporation, steam generation, at high speed through the pump at all levels gap discharge spout, so that the gas inside the container molecules diffuse into the position steam pump can be brought before the stage action, quickly withdrawn from the pre-vacuum pump, allowing the system to achieve high vacuum requirements.