Two Stage Rotary Vane Vacuum Pump
1988:established headquarter in Zhejiang, mainly produce vacuum pump SK series for medicine industry 1997:established a sales branch in Shanghai 1998:research and develop SK-A,SK-D series for plastic industry 2007:establish foreign trade department and start foreign trade business  Main products: Liquid ring vacuum pump:SK,SK-A,SK-D,2SK,2SK-B,2BEA,etc Centrigugal pump: IZ(BL),etc Rotary vane vacuum pump:2X,2XZ-B,VRD,XD,etc CE;ISO9001:2000; ISO14001:2004; 1988:established headquarter in Zhejiang, mainly produce vacuum pump SK series for medicine industry 1997:established a sales branch in Shanghai 1998:research and develop SK-A,SK-D series for plastic industry 2007:establish foreign trade department and start foreign trade business  Main products: Liquid ring vacuum pump:SK,SK-A,SK-D,2SK,2SK-B,2BEA,etc Centrigugal pump: IZ(BL),etc Rotary vane vacuum pump:2X,2XZ-B,VRD,XD,etc CE;ISO9001:2000; ISO14001:2004;
The air mattress refers to a mattress that has strong flexibility and elasticity, and the inflationary volume becomes larger after inflating. Advantages: The elasticity of the inflatable bed is not easy to deform, and it is very comfortable to sleep. It feels like sleeping spring beds. It is easy to carry and move.
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This type of pump is double stage high speed oil sealed rotary vane vacuum pump. It is equipped with gas-ballast valve. Its function is to fill the exhaust space with certain amount of air ,when the valve is open ,so to reduce the proportion of the partial pressure of vapor in the total discharge pressure .As the partial pressure of vapor is lower than that of the saturated vapor pressure corresponding to the working temperature of the pump, vapor can be discharged from the pump with the filled air in order to avoid condensation of vapor in the pump oil and to prevent oil from emulsifying by the condensed vapor so as to prolong the useful lift of oil .However the ultimate vacuum of the pump shall drop ,and the temperature of the pump shall rise when the gas-ballast valve is open.
This type pump has the outstanding achievements of small size, less weigh ,quiet operation and easy to start .Besides devices to prevent from sucking back of oil and leakage of oil from axle sealing to contaminate environment are also provided.
Field of Application
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1. The pump is one of the basic equipments to exhaust a sealed vessel. It can be used either independently as main and can also be served as forepump for booster pump diffusion pump and molecular pump or as holding pump for a vacuum system and as a pre-pumping for different kinds of the pumps. So that is can be applied in electro-vacuum industries, vacuum flask manufacturing, vacuum welding and as an accessory to those fine gauges or meters where vacuum is required .It is more suitable for laboratory use because of its small size ,less weight and quiet operation .
2.The pump is allowed to work continuously for many hours at a stretch under atmospheric temperature of 5ºC-40ºC and intake pressure below 1230pa.While the pumped gas containing moisture of a relative humidity of more than 90% gas-ballast valve should be open.
3. Whit the inlet port widely opened to atmosphere the pump is not allowed to work more than one minute.
4.The pump is not suitable for pumping over-oxidized, poison, explosive and corrosive gas as well as gases which react chemically with the pump oil contain particles of dust.
Company overview
Certificate:Â Â 
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Product overview
This type of pump is double stage high speed oil sealed rotary vane vacuum pump. It is equipped with gas-ballast valve. Its function is to fill the exhaust space with certain amount of air ,when the valve is open ,so to reduce the proportion of the partial pressure of vapor in the total discharge pressure .As the partial pressure of vapor is lower than that of the saturated vapor pressure corresponding to the working temperature of the pump, vapor can be discharged from the pump with the filled air in order to avoid condensation of vapor in the pump oil and to prevent oil from emulsifying by the condensed vapor so as to prolong the useful lift of oil .However the ultimate vacuum of the pump shall drop ,and the temperature of the pump shall rise when the gas-ballast valve is open.
This type pump has the outstanding achievements of small size, less weigh ,quiet operation and easy to start .Besides devices to prevent from sucking back of oil and leakage of oil from axle sealing to contaminate environment are also provided.
Field of Application
Â
1. The pump is one of the basic equipments to exhaust a sealed vessel. It can be used either independently as main and can also be served as forepump for booster pump diffusion pump and molecular pump or as holding pump for a vacuum system and as a pre-pumping for different kinds of the pumps. So that is can be applied in electro-vacuum industries, vacuum flask manufacturing, vacuum welding and as an accessory to those fine gauges or meters where vacuum is required .It is more suitable for laboratory use because of its small size ,less weight and quiet operation .
2.The pump is allowed to work continuously for many hours at a stretch under atmospheric temperature of 5ºC-40ºC and intake pressure below 1230pa.While the pumped gas containing moisture of a relative humidity of more than 90% gas-ballast valve should be open.
3. Whit the inlet port widely opened to atmosphere the pump is not allowed to work more than one minute.
4.The pump is not suitable for pumping over-oxidized, poison, explosive and corrosive gas as well as gases which react chemically with the pump oil contain particles of dust.
Company overview
Certificate:Â Â
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The quality of P&D inflatable air mattress is too good and uses peace of mind; folding is as large as the pillow, it is very easy to carry and move, without having to move home and throw away a mattress; when the guest comes, take it out of the drawer and charge up. Qi, there is a comfortable bed, and the guests walk away after walking; if your house is not spacious, then you can stand up and attach it against the wall during the day to give you a larger activity space; Like the spring bed, there is a bacteria inside, and it will be recessed after sleeping in the buttocks for a long time, and it will not be able to play. The inflatable bed will always be elastic.
