KWI Series Water Lubricated Screw Compressors

KWI series scroll air compressors directly using water to lubricate air end during compression, obtain 100% oil free compressed air that meet the ISO Class 0 standard. The special pure water also play the role of cooler, take away the heat during lubricating more efficiently than oil and after-cooler, maintain the high efficiency performance of KWI series water lubricated screw compressors.

KWI Series Water Lubricated Single Screw Compressors

KWI series water lubricated screw compressors adopt Kotech advanced muti-stage and single screw design, possess the highest efficiency and stability by utilizing super precision technology of Mitsui Seiki. The advanced full specialized air end, star wheels and single screw that designed and manufactured by Kotech, as well as the air-water separator, water softer and pipeline system, are all made of stainless steel, ensuring no rusting or corrosion happens on the KWI series air compressors.

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Leading air compressor Manufacturer & Factory & Supplier in Britain

Global leader in air compressors and its spare parts manufacturer with total integrated digital technology.Kotech group has long been commited to the researching and developing of energy saving system since was founded in 2014, its R&D department located in Gillingham, UK.

Kotech has been upgrading and expanding our main production base in China, to meet our developing markets globally, and research more advanced technology for higher quality and more cost-effective products. The new factory covering an area of more than 64,000 square meters is expected to be officially put into operation in the early spring of 2025, which will triple our production scale.

It is expected that the increasing team will be established, which will not only inject fresh blood into our scientific and technological R&D and technological innovation, but we will also have more engineers to bring our services to more countries.

Kotech Air Compressor Manufacturer New Factory in China

Why Choose us as your Air Compressor Supplier？

The kotech air compressor factory is ISO9001,ISO8573.1,CE,TUV,UL,SGS,ASME and and other international certifications certified. We have rich experience in manufacturing air compressors such as rotatry screw air compressor with the following advantages and services:

OEM/ODM /SKD Order is acceptable. We can customize the order according to the client’s requirements. Welcome the order from private label, modified design, ecomoic to high end configuration option.
Energy cost savings up to 50%.
CE, ASME, TUV, SGS, and UL are available.
Stable material suppliers, high quality and cost well.
24/7 Pre-sales and after-sales screw air compressor service for every customer.
We have built up the stragetic partnership with the international brands below:
for air end brand: Ingersoll Rand GHH air end;
for electic brand: Siemens electric ( motor, PLC, controller, converter etc) ;
for engine, Cummins or Perkins or Yanmar etc.

Production Process

Certification Exhibition

Frequently Asked Questions

What Can Kotech Air Compressors Do?

Kotech Air Compressor can be used as air power, for material conveying, gas synthesis and polymerization, gas separation and refrigeration, fermentation and stirring, construction and mining, it can be also used in medical and pharmaceutical industry and so on, it plays an important role in all these industries and fields.

What Products Does Kotech Manufacture?

Kotech got product lines for various air compressors and its spare parts as well as other machinery for construction and mining such as: Diesel Portable Air Compressors, Portable Gasoline Air Compressors, Electric Portable Air Compressors, Oil Free Air Compressors, Centrifugal Air Compressors, Air Blowers, Silent Scroll Air Compressors, Dry Screw Air Compressors, High Pressure Oil Free Piston Air Compressors; and other industrial tools like: Silent Diesel Generator Sets, Mobile Solar light towers, Portable Diesel Engine Light Towers, Air Pumps and so on. We can always provide high-quality and stable air compressor solutions and low failure rate machinery.

Does Kotech provide OEM/ODM services? What’s the delivery time?

Kotech has its own design department and both OEM&ODM can be accepted. For OEM order, it can support private label, for brand logo, adhesive stickers, compressor color; for ODM order, we can design it according to the customer’s original drawings. The delivery time is within 20-45days according to order.

How do Rotary Screw Air Compressors Work？

Rotary screw air compressor working principle is :The spiral rotor groove is filled with gas as it passes through the suction port,when the rotor rotates, the rotor groove is closed by the wall of the casing, forming a compression chamber, when the rotor groove is closed, the lubricating oil is sprayed into the compression chamber to seal and cool. When the rotor rotates and compresses the oil-gas mixture, the volume of the compression chamber decreases and the oil-gas mixture is compressed towards the exhaust port. When the compression chamber reach to the exhaust port, the oil and gas mixture from the compressor discharge, complete a suction – compression – exhaust process.

How to Size Suitable Air Compressor？

To find out the suitable size air compressor, the first thing you should know is the major factors that determine the working competence of an air compressor, and then consider the type of air compressor based on your actual situation and requirements for compressed air,such as caculate the pressure and CFM requirements of your pnuematic tools. If you not sure how to do, contact us for free help!