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K-720 diffusion pump

● Occupies little space and has a high suction rate
● Working pressure range: 10-2 to 10-5 Pa
● Utilizes internal heating method with high energy efficiency
● Long service life
● Provides temperature data through thermocouple

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K-720 diffusion pump

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  • Product Details
  • Specifications
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  • Product Applications
  • The K-720 diffusion pump is an oil diffusion pump and belongs to a secondary vacuum pump. It needs to be used in conjunction with a mechanical pump (such as a vane pump or a rotary vane pump) as the pre-stage pump. Its working principle is to generate a high-speed vapor jet by heating the oil, carrying gas molecules from the pump inlet to the outlet, and then returning them to the oil pool after condensation, thereby achieving a high vacuum environment.

  • Main application fields 

  • Applied to various industries such as aerospace, scientific research, nuclear power, coating, solar energy, vacuum furnaces, energy, medicine, metallurgy, and chemical engineering, etc.


  • Product Features 
  •  
  • ● Occupies little space and has a high suction rate
  • ● Working pressure range: 10-2 to 10-5 Pa
  • ● Utilizes internal heating method with high energy efficiency
  • ● Long service life
  • ● Provides temperature data through thermocouple






Technical Parameters


项   目
Item		性   能
performance
进气口通经(mm)
Air inlet passage (mm)		720
排气口通经(mm)
Exhaust opening pass (mm)		160
名义抽气速度（l/s）无水冷阱
Nominal pumping speed (l / s)
without water cooling trap		≥22000
名义抽气速度（l/s）装有水冷阱
Nominal pumping speed (l / s)
with water-cooled trap		≥11000
有效抽气速度（装有水冷阱）
Effective pumping speed (with water-cooled trap)		≥11000L/S
极限压力（Pa）（装有水冷阱）
Ultimate pressure (Pa) (with water-cooled trap)		≤5.0×10-5
空载临界前级压力（Pa）
No-load critical back pressure (Pa)
Use pump oil		≥36
满载临界前级压力（Pa）
Critical back pressure at full load (Pa)		≥30
使用泵油
Pump oil		DC705/275硅油
Silicone oil
使用泵油量（L）
Pump oil volume (L)		11
泵油返流率（装有水冷阱）（mg/cm2.min）
Pump oil return rate
(with water cooling trap) (mg / cm2.min)		＜10-5
使用电量（KW）
Power consumption (KW)		12
加热方式
heating method		加热管浸入油中加热
Heating tube immersed in oil to heat
冷却方式
cooling method		强制水冷
Forced water cooling
使用冷却水流量（L/min）
Use cooling water flow (L / min)		10
冷却水连接口
Cooling water connection		G3/8（8处）  G1/8(2处)
G3/8-8 places；G1/8-2 places
预热时间（min）
Warm-up time (min)		80
重量（Kg）
Weight (Kg)		～380
 

抽气曲线图





外形连接尺寸


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K-720 diffusion pump
● Occupies little space and has a high suction rate
● Working pressure range: 10-2 to 10-5 Pa
● Utilizes internal heating method with high energy efficiency
● Long service life
● Provides temperature data through thermocouple
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