The oil vapor contamination in the old vacuum furnace was inherited from its oil diffusion pump and the inaccuracy temperature control of the furnace chamber was resulted from the manual temperature adjust - ment . These problems have severely restricted the development of vacuum technology in our laboratories .

老式 真空炉由于采用了油 扩散 泵和手动控温方式，存在真空系统被油污染和控温精度差的问题，严重影响了真空工艺质量。

Development of new-type K-800A high vacuum oil diffusion pump

新型K-800A高 真空油 扩散 泵的研制

Determination of back stream of pump fluid of vacuum oil diffusion pump as well as equipment with oil diffusion pump by infrared spectrum

真空油 扩散 泵及其设备泵液返流率红外光谱测定法

KT-400 high vacuum oil diffusion pump which is characterized by extreme high vacuum pumping speed large increase production efficiency while the vacuum pneumatic valves with automatic control .

KT-400高 真空油 扩散 泵，它的特点是真空极限高，抽速大，提高生产效率，同时真空气动阀门采用自动控制。