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  • Roots water ring vacuum unit as vacuum cooling machine
    Roots water ring vacuum unit as vacuum cooling machine Roots water ring vacuum unit is made with a water ring vacuum pump Roots composed of a single water ring vacuum pump to achieve a degree of 3300...

  • Rational choice based on metallurgical vacuum pump
    Rational choice based on metallurgical vacuum  pump Vacuum metallurgical equipment, pre-pumping in cold oven and hot air during the smelting roughly: ① is pumped air space (with pumped volume r...

  • Works rotary vane vacuum pumps gas ballast valve
    Works rotary vane vacuum pumps gas ballast valve Gas ballast valve is usually, in addition to pumping gas is a mixture of permanent gases and condensable gas rotary vane vacuum pump for pumping condens...

 
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