2X SERIES OF TWO-STAGE VANE PUMP This series of vacuum pumps can be used by themselves or as the backing pumps of the Roots pumps,diffusion pumps,motecule pumps and titanium pumps.With the adulterating-gas valve,the pumps can suck a little coagulagle gas,humid air or the mixture of gas and vapor,but which can not contain particle-shaped solid matter. Model：2X-2/4/8/15/30A/70A Ultimate partial pressure(Pa)：≤6×10-2 Ultimate total pressure(Pa)：≤1 Pumping speed (L/s)：2-70 Motor power(kW)：0.37---5.5
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