Tow stage oil sealed rotary vane vacuum pump has two cyliner and can compress the air two times. It can generate higher vacuum level than single stage rotary vane vacuum pump. It can be applied in lab and industial application on low or medium vacuum requirement. 

Dry scroll vacuum pump is a new kind of oil-free mechanical pump with features of simple construction, good sealing, high vacuum ect. As a high- technology product, it has highly technical requirement in design and manufacture. With benefits of low consumption, long working life, high reliability, and low noise, It has incomparable advantages in the application of clean process and has been popularly used in the market.

 This valve is suitable for working medium with air and non-corrosive gas. It is used to cut or turn on the vacuum line and is one of the important

components of the vacuum system. The hand wheel is turned by hand (manual) or compressed air (pneumatic) as the driving force and the

mechanism is connected with valve plate to lift and lower, and the valve opening and closing action is completed.