Welcome to EVER POWER, your trusted Netherlands-based manufacturer of advanced compressed air systems. If you are exploring options for pure, reliable air, understanding the fundamentals of our equipment is the first step. Let us dive into the mechanics and benefits of our flagship solutions.
1. Product Overview: The 100% Oil-Free Standard
The water injected air compressor represents the highest tier of clean air technology. By completely eliminating lubricating oil from the compression process, these machines guarantee the purity of the air output.
- Quick Industry Applicability: Perfect for pharmaceuticals, medical equipment manufacturing, electronics, textiles, and high-end food processing.
- Core Advantages Summary: Delivers true ISO 8573-1 Class 0 air, reduces energy consumption through near-isothermal compression, and drastically lowers environmental impact by removing oil waste.
2. Technical Parameters
Our units are designed for robust industrial performance. Below are the key specifications for our standard models. Please note that mobile users can swipe horizontally to view the full table data.
| Model Series | Motor Power (kW / HP) | Max Working Pressure (bar) | FAD Capacity (m3/min) | Cooling Method |
|---|---|---|---|---|
| EP-WI-22 | 22 kW / 30 HP | 7.5 – 10.0 | 3.2 – 3.6 | Air / Water Cooled |
| EP-WI-37 | 37 kW / 50 HP | 7.5 – 10.0 | 5.8 – 6.4 | Air / Water Cooled |
| EP-WI-55 | 55 kW / 75 HP | 7.5 – 10.0 | 8.9 – 9.8 | Air / Water Cooled |
| EP-WI-75 | 75 kW / 100 HP | 7.5 – 10.0 | 12.5 – 13.8 | Water Cooled |
3. Working Principle and Structure Briefing
Unlike traditional oil-flooded machines, a water injected air compressor utilizes highly purified reverse osmosis (RO) water within the air-end. Atmospheric air is drawn through an intake valve into the compression chamber. As the rotors turn, water is injected directly into the housing.
This water performs three vital roles: Sealing the microscopic gaps between the rotors and the casing to prevent air backflow; Cooling the air to absorb the massive heat generated by compression, keeping operating temperatures safely below 50 degrees C; and Lubricating the ceramic-polymer bearings and rotor surfaces, allowing for smooth, frictionless rotation without a single drop of oil.
4. Five Core Advantages
💧 Absolute Purity
Guarantees zero oil carryover, protecting sensitive end-products and eliminating the need for complex, expensive downstream oil filtration systems.
⚡ Isothermal Efficiency
Because water absorbs heat instantly, the compression process is nearly isothermal, consuming up to 15% less electrical power than two-stage dry screw models.
🔇 Whisper-Quiet Operation
The water film acts as a natural sound dampener. Combined with lower rotation speeds, these machines run at significantly lower noise levels (often below 70 dB(A)).
🌍 Eco-Friendly Design
No oil means no hazardous condensate disposal. The condensate produced is pure water, allowing it to be safely discharged directly into regular drainage systems.
🔧 Lower Maintenance Costs
You never have to purchase oil, oil separators, or oil filters. Routine maintenance focuses primarily on simple air and water filters.
5. Structure and Material Craftsmanship
Operating in a completely wet environment demands superior metallurgy to prevent rust and degradation. EVER POWER utilizes premium corrosion-resistant materials throughout the system.
The main air-end casing is constructed from high-grade bronze alloys or coated stainless steel. The rotors are precision-machined from advanced polymer-ceramic composites or specialized stainless steel, ensuring they are impervious to corrosion and maintain their precise geometric tolerances over tens of thousands of operating hours. The integrated RO water filter ensures that only demineralized water enters the chamber, preventing scale buildup on these critical components.
6. Typical Application Scenarios
These specialized machines are the backbone of industries where air purity is non-negotiable.
- Semiconductor Manufacturing: Used to blow ultra-clean air across silicon wafers. Any microscopic oil mist would instantly ruin the circuitry. The water injected principle ensures 100% safety.
- Pharmaceutical Coating: Pills and tablets require pneumatic conveying and coating. Oil-free air guarantees that no chemical contamination alters the medical efficacy of the drugs.
- Textile Spinning: High-speed air jet looms rely on compressed air to shoot threads. Oil in the air would stain the fabrics, causing massive product rejection rates.
7. Selection Guide: How to Choose
Choosing the correct equipment is critical for optimal factory performance. Follow these guidelines:
- Confirm Your Purity Needs: Verify if your facility strictly requires ISO 8573-1 Class 0, or if standard filtration is sufficient.
- Assess Ambient Temperature: Since these units rely on water, the installation room MUST maintain temperatures strictly above freezing (above 2 degrees C) at all times to prevent internal ice formation.
- Calculate Peak vs. Base Load: If your air demand fluctuates wildly during shifts, strongly consider a Variable Frequency Drive (VFD) model to maximize energy savings.
- Check Water Quality: While our systems have built-in RO filters, extremely hard industrial feed water may require a pre-softener to extend filter life.
8. Brand Comparison: Premium Performance at a Fair Price
Disclaimer: We explicitly state that we mention third-party brands (such as Atlas Copco, CompAir) and their model series solely for the purpose of technical comparison, reference, and to assist customers in model selection. We are an independent manufacturer (EVER POWER) and do not sell counterfeit products. We respect all intellectual property rights.
| Feature | EVER POWER (EP-WI Series) | Atlas Copco (AQ Series equivalent) | CompAir (DH Series equivalent) |
|---|---|---|---|
| Air Purity | Class 0 | Class 0 | Class 0 |
| Rotor Material | Polymer/Stainless | Polymer Ceramic | Bronze/Polymer |
| Purchase Cost | Highly Competitive | Premium Pricing | Premium Pricing |
| Spare Parts | Accessible & Affordable | Proprietary & Expensive | Proprietary & Expensive |
By choosing EVER POWER, you acquire the exact same technical principles and Class 0 purity as global legacy brands, but with a significantly faster return on investment (ROI).
9. Quality Certification & Service Commitment
As a proud Netherlands enterprise, EVER POWER adheres strictly to European engineering standards. Every machine leaving our factory holds full CE certification, ensuring electrical and mechanical safety. Furthermore, our manufacturing processes are ISO 9001 certified.
We provide a comprehensive 2-year warranty on the entire machine, with a special extended 5-year guarantee on the main air-end. Our global network of engineers ensures that spare parts and remote technical diagnostics are always available, minimizing your downtime.
10. Global Case Studies (Engineer Field Notes)
📍 Client: Bio-Tech Lab in Switzerland
Application: Compressed air for delicate biological fermentation tanks.
Feedback: “We replaced our old dry screw with the EVER POWER 37kW water injected model. Not only is our clean room completely free from oil vapor, but the noise reduction was so dramatic that our technicians can now have normal conversations next to the compressor room.”
📍 Client: Electronics Assembly in South Korea
Application: Pneumatic robotics and PCB board cleaning.
Feedback: “The isothermal cooling feature saves us roughly 12% on our monthly electricity bill compared to our previous units. The RO water system is remarkably easy for our maintenance crew to handle.”
📍 Client: Premium Winery in Australia
Application: Bottle blowing and pneumatic wine press operation.
Feedback: “Total peace of mind. Wine easily absorbs ambient odors, especially oil vapor. With EVER POWER’s Class 0 certification, we protect million-dollar batches of vintage wine. Excellent cost-to-performance ratio.”
11. Partner With EVER POWER
Upgrading your facility to 100% oil-free air is a major step toward product safety and energy efficiency. Do not let complicated options delay your progress. Our engineering team in the Netherlands is ready to review your factory plans, calculate your exact air demand, and provide a tailor-made quotation.
12. Frequently Asked Questions (FAQ)
Q1: What happens if the internal water freezes in winter?
A: Water injected systems must be installed in environments where the ambient temperature never drops below 2 degrees C. If freezing occurs, the internal expansion of ice can severely damage the bronze casing and ceramic bearings. We offer optional factory heating enclosures for cold climates.
Q2: How often must the RO water elements be replaced?
A: This depends heavily on your local tap water hardness. On average, the pre-filters and RO membranes should be checked and potentially replaced every 3,000 to 4,000 operating hours to maintain perfect internal water purity.
Q3: Can I connect this to my existing air piping?
A: Yes, absolutely. However, we highly recommend flushing your old pipes or installing new aluminum/stainless steel piping. Old galvanized pipes may contain residual oil from previous compressors, which will contaminate the pure air produced by the new machine.
