The main features of Roots vacuum pump over a wide pressure range (1-1 × 10-4) has a higher pumping speed and pump chamber without oil, to avoid the oil vapor pollution vacuum systems. Roots vacuum pumps use small vibration, low noise. Small mechanical friction loss, so the drive power is small. Easy to maintain and repair Roots vacuum pump manufacturer, low cost, high life expectancy. Can be pumping gas condensate. ? Do not alone, you must configure before the pump. Before the start is not allowed to start at atmospheric pressure until the foreline pump Roots pump inlet pressure pumped allow inlet pressure. Foreline pump can pump water ring vacuum pumps Roots direct, reciprocating pumps, jet pumps, rotary vane pumps, claw pumps. The principle and structure Roots vacuum pump is mainly composed of a pair of high-speed synchronous rotation of the "8" shaped rotor and two semicircular pump chamber components. The pump alone can not exhaust, must be with a pump (such as claw-type pumps, screw pumps, rotary piston pump, water pump, oil ring pumps, etc.) used in tandem. Front air intakes on the front-stage pumps in series Roots vacuum pump unit and increase the degree of vacuum before the pump, the effective range can greatly improve the pumping rate. Roots vacuum pump ultimate pressure is determined by the pre-pump. Roots pumps are widely used in vacuum casting, vacuum distillation vacuum melting, vacuum degassing, vacuum coating industry and the chemical and pharmaceutical industry, vacuum drying. Pump is not sensitive to small amounts of dust. Roots vacuum pump supplier, Tianjin Roots vacuum pumps, Zhucheng East Machinery Co., Ltd. by John Han Machinery Co., Ltd. Zhucheng East. Zhucheng East Han Machinery Co., Ltd. (www.dhlcfj.com) (www.dhlcfj.com) strong, credible, Shandong Weifang fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Zhucheng East Han Machinery Co., Ltd. into the brilliant and you work for a better future!