The Introduction

Be suitable for the research experiment, small scale test and small scale production process which have the processes such as evaporation, distillation, crystallization, drying, sublimation, filtration and decompression, degassing.

The Characteristics

(1)The operating principle is the same as that of desk-top type pump.

(2)Compared with the desk-top type pump, the bleed air flow is more, which applies to the vacuum demands with large bleed air flow.

(3)Five taps can be used alone or in parallel. The bleed air flow is large with five-way pipe in parallel, which can meet the demand of large scale Rotary Evaporator or Reaction Kettle.

(4)The special machine is made by the famous electric manufacture ODM with fluorine rubber sealing, the inner of which can’t be intruded by corrosive gas.

(5)The body of the flume adopts polyvinyl chloride (PVC) material, the casing adopts carbon constructional quality steel cold rolling plate and the surface adopts electrostatic spraying

(6)Ejector with copper material, tee junction, back valve and gas-extraction nozzle adopt the PP material.

(7)The pump body and impeller adopt stainless steel plate pressing (SUS standard).

(8)Be furnished with truckles, which is convenient for moving and is suitable for the flexible configuration in labs and workshops.

 We have Standard wooden or carton boxes for you. Goods will be shipped by air or sea.

 Zhenghzou Greatwall Scientific Industrial and Trade Co, Ltd. is a company for scientific experimental instrument and industrial related equipments integrated with researching, developing, manufacturing, and managing. The company not only keeps promise in high quality to products and high service to consumers, but also pays more attention on technological innovation.Company was established in 1988 located in Zhengzhou, Henan. We have more than 25 years of experience for providing you high quality products. The number of employees is more than 200 people. The company products have more than ten series and one hundred types of lab equipments include multiple-use circulating water vacuum pump, rotary evaporator, glass reactor and so on. 

* On March 23th, 2015,  "the Middle East Dubai Exhibition of Experimental Apparatus

     and Analytical Equipments” was opened in Dubai’s International Exhibition Centre

     (World Trade Centre). Our company was invited to attend the Dubai's exhibition

We gained ISO 9001 : 2008 Standard

Why do you choose Zhengzhou Greatwall?

Our company was established in 1988, we have more than 25 years of experience for providing you high quality products. The company keeps promises and strictly abides by the contracts. It servers for development of education, science and industry based on high quality goods, excellent performance and flawless after-sales service. Our company has become the first enterprise passed ISO9001 International Quality System Attestation in the same domestic industry.

Where have we already sold?

At present, Zhengzhou Greatwall Company has multilevel cooperation relationship with domestic universities and scientific institutions. The domestic branch offices and business agents are distributed more than 20 areas. There are agents in Taiwan, Hong kong and Macau. For the international markets, the products of the company are facing over Asia, Europe and America now. There are our agents in Korea, Canada and India etc, Products are sold to the United States, Italy, and so on.

what' s our products' advantages?

A. Trustworthy brand, high quality and competitive prices between others.

B. Strictly quality management when producing.

C. Professional team work, from designing, developing, producing, packing and shipping.

D. After-sale services, we have one year warranty if there is quality problem, we will let us professional technicist to deal with our products’ problem.