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  • Roots vacuum applications in respect of petroleum products refined
    Roots vacuum applications in respect of petroleum products refined (1) dry gas oil in the gas oil product contains water if minimal scene, it will make it muddy color is not bright, greatly reducing ...

  • Principle and the use of the vacuum valve
    Principle and the use of the vacuum valve Vacuum valve was in the 1990s developed a vacuum valve. It works like a vacuum valves. Rely on a solid spherical rotary valve plate rotation axis 90 ° to...

  • Reciprocating pump features
    Reciprocating pump features What is a reciprocating pump? Let me give you an example to understand, it's the principle of the needle with the hospital is the same, there is something black piston recip...

 
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