In increasingly demanding industrial environments (food, pharmaceuticals, electronics, packaging), compressed air quality is not a luxury but a must. At JustAir, we understand this like no other. Our water-injected oil-free screw compressors (WS range) deliver compressed air of the very highest purity class – ISO 8573-1 Class 0 – with maximum reliability, minimum maintenance costs and exceptional service life.
A WS (Water-Injected Screw Compressor) compressor uses water instead of oil for cooling, lubrication and sealing between the screw rotors. That means:
Cooling via water leads to lower operating temperatures and significantly less wear.
Clean operation, without oil mist or contaminants, crucial in sectors where cleanliness is required legally, hygienically or technically.
Feature | Customer Advantage | JustAir’s unique added value |
100 % oil-free (ISO 8573-1 Class 0) | No risk of contamination, meets HACCP, pharmaceutical & food certifications | We guarantee Class 0 compressed air with certification; proven in critical production environments |
Cooling with water instead of oil | Lower operating temperature, less heat loss, longer service life, lower energy costs | Our systems have optimal water circulation and stainless steel heat exchangers for maximum efficiency |
Energy efficient & low maintenance | Lower operating costs, fewer failures, longer maintenance intervals | JustAir offers optimized rotor designs and automatic monitoring to maximize efficiency |
Purity: ISO 8573-1 Class 0 (oil-free) – guaranteed by JustAir certification.
Temperature management: water injection keeps operating temperatures consistently low, drastically reducing wear and downtime.
Service life: Rotors and housing designed for long-term operation; service intervals up to 30-40 % longer than with conventional oil lubrication.
Energy consumption: Our WS compressors perform with up to 20-30 % savings on electricity compared to oil-lubricated compressors, depending on workload and environmental conditions.
This technology is ideal for businesses in:
Food industry – no oil traces, easy to clean, meets food safety standards.
Pharmaceutical manufacturing – sterile production environments, critical air purity.
Electronics & high-tech – zero tolerance for contamination, precision processes.
Packaging industry & those interested in sustainability – less carbon footprint, lower operating costs.
Free & no-obligation process analysis
We analyze your current compressed air needs, product quality and cost structure. This is how you determine exactly whether a WS compressor is cost-effective, and what capacity or setup.
Custom solution
From installation to configuration, we match capacity, cooling system, water treatment and control technology to your process requirements.
24/7 monitoring & support
Our compressors are equipped with remote monitoring as standard; failures or loss of efficiency are detected early. With JustAir service contract, we guarantee optimal operation.
Financing & Air-as-a-Service
No heavy upfront investment? JustAir offers Air-as-a-Service models where you pay by consumption or capacity, without the worry of maintenance and replacement.
By investing in our WS line you get:
Reduction of production losses due to air pollution by > 90 %;
Reduce maintenance costs by at least 25-35%;
Payback period (ROI) of 2-4 years, depending on usage – thereafter pure profit;
Improved reliability ≥ 99 % uptime thanks to JustAir monitoring & service;
Wondering what JustAir can do for your compressed air production?
Request a free quote & process analysis now. Show us your current situation, we’ll show you the savings, reliability & cleanliness you can realize today.
With years of experience in oil-free compressor solutions, in-depth knowledge of laws and regulations in hygiene-sensitive industries and a passion for sustainability, JustAir is the market leader in oil-free, water-injected screw compressors. We combine technical ingenuity, service orientation and innovative financing models (such as Air-as-a-Service) to make your production safer, cleaner and more profitable.
Our water-injected screw compressor delivers clean compressed air according to ISO Class 0, with minimal energy consumption and low maintenance costs. Ideal for those who want to combine reliability and durability.
Find out how JustAir can add value to your operations. Call us or send us an email for a no-obligation demonstration and analysis of your needs.
