KT series oil diffusion vacuum pump is the main equipment used to obtain high vacuum (10-2~10-5Pa). It forms a high vacuum pumping system with valves, water-cooled baffles, pipelines, mechanical vacuum pumps, etc., and can obtain a working vacuum degree of (10-2~10-4Pa). If a cooling device such as liquid nitrogen is used and baked, an ultra-high vacuum (10-6Pa) can be obtained. The pump is characterized by large pumping capacity. Pumping speeds are available in the range of 480L/s to 130000L/s. It is equipped with an oil observation window, oil filling and draining ports, and pump oil measuring devices. It is widely used in high-tech fields such as vacuum coating, vacuum furnaces, electronics, chemicals, aviation, aerospace, metallurgy, materials, biomedicine, atomic energy, and space exploration, and has been widely used and well received in the field of sponge titanium.