Unleash unparalleled performance with the Industrial Two-Stage Sanzhi Screw Air Compressor, boasting a powerful 200kw capacity and an advanced water-cooled system. Proudly brought to you by Sanzhi (Henan) Compressor Co., Ltd., a renowned leader in the Chinese market, this compressor delivers exceptional value with Factory Price Permanent Magnet Variable Frequency technology. Our compressors are meticulously engineered to include premium quality Industrial Centrifugal Fans, ensuring top-tier Energy Saving and High Efficiency. Designed to be stationary, this unit is the epitome of reliability and performance for all your industrial needs.
Internal Structure Frontside
Internal Structure Backside
Working Principle
In an ideal air compression process, the power required for single-stage pressure transmission equals the combined power for multi-stage compression. However, in real-world applications, factors such as coupling transmission power loss, bearing friction coefficients, and the cooling effect of liquid viscosity increase the actual working power. To mitigate these inefficiencies, reducing the compression ratio at each stage can decrease the total power required for multi-stage compression, making it more efficient than single-stage compression.
The two-stage screw air compressor features a sophisticated two-stage rotary screw mechanism. Each stage has an active and a passive screw, with the active screw powering the passive one through an external transmission device. The first stage employs a low-pressure rate screw group, while the second stage uses a high-pressure rate screw group. Each screw is encircled by a sealing air film. As the screws rotate, gas undergoes a three-phase compression process: suction, pressurization, and exhaust.
First Stage Compression: At the initial stage, the two-stage screw air compressor uses a low-pressure rate screw group. Gas is drawn into the screw compression chamber via the suction valve and progressively compressed by the high-speed rotating screw rotor. The compressed gas is then transferred to the second stage for further processing.
Second Stage Compression: During the second stage, gas enters a more confined screw space, experiencing higher temperatures and pressures. The exhaust valve then opens to expel the high-pressure gases from the system efficiently.
Natural air is initially drawn into the compressor through an air filter and mixed with a small amount of lubricating oil in the compression chamber. This mixture is compressed to interstage pressure levels. The compressed gas is subsequently cooled in a cooling channel, where it interacts with a substantial amount of oil mist, significantly reducing its temperature. The cooled, compressed gas then enters the second-stage rotor for additional compression to the final exhaust pressure. The entire process concludes with the gas being discharged through the exhaust valve.
| Sanzhi (Henan) Compressor Co,. Ltd. |
| Two-Stage Compression Permanent Magnet Variable Frequency Screw Air Compressor |
| Model |
Power |
Exhaust pressure |
Free air delivery* of unit at working pressure |
Voltage |
Frequency |
Air outlet discharge size |
Weight |
Dimensions |
| KW |
Mpa |
m³/min |
V |
Hz |
Inch |
Kg |
L*W*H(mm) |
| SZ15VF-II |
15 |
0.5 |
4.00 |
380 |
50 |
G1½ |
660 |
1450*780*1180 |
| 0.8 |
3.00 |
| 1.3 |
2.00 |
| SZ19VF-II |
18.5 |
0.5 |
5.00 |
380 |
50 |
G1½ |
680 |
1450*780*1180 |
| 0.8 |
4.00 |
| 1.3 |
3.80 |
| 1.6 |
2.20 |
| SZ22VF-II |
22 |
0.5 |
6.60 |
380 |
50 |
G1½ |
730 |
1650*880*1280 |
| 0.8 |
4.20 |
| 1.3 |
3.00 |
| 1.6 |
2.50 |
| SZ30VF-II |
30 |
0.5 |
7.00 |
380 |
50 |
G1½ |
980 |
2000*1260*1560 |
| 0.8 |
6.40 |
| 1.3 |
4.00 |
| 1.6 |
3.00 |
| SZ37VF-II |
37 |
0.5 |
10.00 |
380 |
50 |
G1½ |
1080 |
2000*1260*1560 |
| 0.8 |
7.00 |
| 1.3 |
5.50 |
| 1.6 |
4.00 |
| SZ45VF-II |
45 |
0.5 |
13.00 |
380 |
50 |
G2 |
1980 |
2000*1260*1560 |
| 0.8 |
10.00 |
| 1.3 |
6.50 |
| 1.6 |
5.00 |
| SZ55VF-II |
55 |
0.5 |
17.00 |
380 |
50 |
G2 |
2180 |
2150*1300*1730 |
| 0.8 |
12.00 |
| 1.3 |
8.60 |
| 1.6 |
5.00 |
| SZ75VF-II |
75 |
0.5 |
20.00 |
380 |
50 |
G2 |
2280 |
2150*1300*1730 |
| 0.8 |
16.50 |
| 1.3 |
11.00 |
| 1.6 |
9.00 |
| SZ90VF-II |
90 |
0.5 |
24.00 |
380 |
50 |
DN65 |
3200 |
2700*1920*1820 |
| 0.8 |
20.00 |
| 1.3 |
14.00 |
| 1.6 |
11.00 |
| SZ110VF-II |
110 |
0.5 |
28.00 |
380 |
50 |
DN65 |
3360 |
2700*1920*1820 |
| 0.8 |
24.50 |
| 1.3 |
18.00 |
| 1.6 |
14.00 |
| Due to product updates, the above parameters are subject to deviation in kind. |
The state-of-the-art centrifugal fan features a cutting-edge high-speed rotating impeller that expertly manages air flow acceleration and deceleration. It utilizes axial air intake to significantly boost motor cooling performance beyond that of traditional air-cooled fans. This groundbreaking design ensures seamless compressor operation, dramatically extending the machine's lifespan.
1) Exceptional Efficiency of *** Motor: The permanent magnet (***) motor outshines with its extensive constant torque range and weak magnetic range, achieving up to 30% higher efficiency than conventional motors. Impressively, the *** motor sustains its high efficiency even when operating outside its rated frequency, guaranteeing unwavering performance.
2) Maintenance-Free Design:Built without internal bearings, the *** motor eradicates the need for expensive bearing maintenance and replacements, ensuring hassle-free operation.
3) Advanced Frequency Converter:Utilizing China's leading frequency system, this unit offers an extensive and precise speed regulation. It fine-tunes its operation based on real-time gas demands, offering unparalleled energy-saving capabilities.
4) Absolute Transmission Efficiency:The *** motor and compressor are directly connected by an integrated shaft, creating a more compact and efficient structure. By eliminating couplings and other transmission parts, it guarantees 100% transmission efficiency.
5) Variable Frequency with Soft Start:This feature reduces the strain on power grid equipment, safeguarding your electrical systems from potential damage.
6) Optimized Energy Consumption:Featuring a 25% to 100% frequency conversion range (as opposed to the standard 50% to 100%), this compressor conserves over 30% more energy than fixed-speed models and approximately 5% more than conventional variable frequency compressors. The greater the fluctuations in gas consumption, the more significant the energy savings.
7) Innovative Two-Stage Compression Air End:This pioneering design combines first and second stage compression rotors within a single housing, driven by gears for optimal speed, substantially boosting compression efficiency.
8) High-Efficiency Internal Spray Curtain Cooling:Our high-efficiency internal spray curtain cooling system drastically reduces compressed air temperatures. By achieving near-isothermal compression, it minimizes pressure loss and compression ratios, enhancing overall efficiency.
9) Minimized Internal Leakage:The two-stage compression lowers the compression ratio for each stage, reducing internal leakage from high to low pressure ends and thereby improving volumetric efficiency.
10) Significant Noise Reduction:The dual-stage compression design notably decreases the compression ratio, resulting in a meaningful reduction in both operational and unloading noise levels.
11) Simplified Maintenance and Service:Aside from the screw air end, the two-stage compressor unit mirrors the structure and systems of single-stage units, ensuring straightforward and user-friendly maintenance and service.
1. Price Advantage
We provide customers with direct ex-factory prices, ensuring that our clients remain highly competitive in their markets.
2. Direct Deal
All our products come directly from the factory, allowing us to offer more cost-effective solutions.
3. OEM & ODM Services
Harnessing robust production and management capabilities, our factory is well-equipped to offer you top-tier OEM and ODM services, ensuring your bespoke needs are flawlessly met.
4. Customized Service
We cater to non-standard and export orders, customizing voltage, power, pressure, and more according to your unique specifications. Reach out to us to discuss your individual requirements.
5. Accept Small Orders
You can start with a small trial order to evaluate the exceptional quality of our products.
6. Fast Delivery
We guarantee the prompt and efficient delivery of high-quality products right to your doorstep.
7. Complete Authorization
For distributors, we provide full authorization certificates, enabling you to sell our SANZHI brand products with complete confidence.
Sanzhi (Henan) Compressor Co., Ltd. is a premier manufacturer renowned for its expertise in screw air compressors and screw vacuum pumps, proudly showcasing over a decade of industry innovation. Our comprehensive product range features normal pressure and low-pressure screw air compressors, permanent magnet frequency conversion screw air compressors, advanced two-stage compression screw air compressors, specialized screw air compressors for laser cutting, and versatile mobile screw air compressors in both single-tank and double-tank configurations. Additionally, our lineup includes electric and diesel mobile screw air compressors, efficient screw vacuum pumps, and much more.
Our production processes are the epitome of efficiency, leveraging state-of-the-art lean and multi-air compressor assembly lines. Backed by a dedicated team of over 50 skilled professionals, we continually refine our management systems, such as ERP, to minimize lead times and guarantee the prompt delivery of superior products.
In management, our factory proudly holds the ISO9001 quality management system certification. We adhere to stringent quality management protocols and standardized control processes. Each machine is subjected to rigorous inspections at every stage-material inspection, production inspection, and pre-delivery inspection-to ensure unmatched quality.
Our customer service is second to none. During the pre-sales phase, we offer expert guidance to help customers select the ideal air equipment for their specific needs and provide highly customizable solutions, including unique OEM products tailored to meet individual dealer requirements. Post-sales, our professional sales and service team ensures a rapid response to all customer inquiries, maintaining our commitment to excellence.
At Sanzhi (Henan) Compressor Co., Ltd., we are dedicated to delivering high-quality, reliable products designed to foster long-term relationships with our customers. With prompt delivery, superior machines, and competitive pricing, we are committed to providing you with exceptional compressed air solutions.
Our factory is strategically located in Xinzheng City, Henan Province, China. We offer convenient pick-up services from Xinzheng International Airport to our factory, which is roughly 30 kilometers away-a journey of about one hour. We warmly welcome you to visit our company and experience our offerings firsthand!
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a professional manufacturer of screw air compressors with over a decade of expertise in the industry.
Q2. How do you control quality?
A: 1. All raw materials undergo stringent quality inspections.
2. Installation procedures adhere to meticulous standards.
3. Each machine must successfully complete a minimum of 5 hours of continuous testing before it leaves our factory.
Q3. What information must I provide to get the suitable machine?
1. Specify the desired air delivery capacity (Unit: CFM or m³/Min).
2. Indicate the required working pressure (Unit: PSI, Bar, or Mpa).
3. Provide voltage and frequency specifications used in your country (V/Hz).
4. List any additional accessories needed, such as air tanks, filters, and/or air dryers.
Share this information with us, and we'll recommend the best solution tailored to your needs!
Q4. What is the general unit conversion?
1Bar = 0.1Mpa = 14.5PSI
1m³/min = 35.32cfm
1KW = 1.34HP
Q5. What are the available voltage options for air compressors?
A: Sanzhi offers a range of voltage options, including 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, and 440v/60hz/3p. Customization is available to fit your specific requirements.
Q6. How long is the delivery time?
A: For standard voltage, expect delivery within 15 working days post-order confirmation. For non-standard requirements, please contact our sales team for a personalized timeline.
Q7. What's the payment term?
A: We offer a flexible payment structure: 30% T/T in advance, 40% T/T before shipment, and the remaining 30% T/T against the B/L copy. Payments can be made in USD or RMB.
Q8. How about your warranty?
A: Enjoy our comprehensive warranty: one year for the entire machine and two years for the screw air compressor, excluding consumable spare parts.
Q9. What about the maintenance?
A: Initial maintenance is required after 500 hours of operation. Routine maintenance should follow every 2000-3000 hours, with adjustments based on actual working conditions.
Q10. Can machines be run in high-temperature environment?
A: Absolutely, our machines excel in high-temperature environments, operating efficiently within a range of -20° to 45° (-4ºF to 113ºF).
Q11. Do you offer OEM service?
A: Yes, we proudly provide both OEM and ODM services, backed by our expert design team to meet your specific needs.
Q12. How long could your air compressor be used?
A: Our durable air compressors are engineered for longevity, delivering reliable performance for over 10 years.
Q13. Will you provide some spare parts for the machines?
A: Certainly, we will provide all the essential spare parts required to ensure your machine functions at its peak performance. Your satisfaction and the machine's efficiency are our top priorities.
Q14. How is your after-sales service?
A: We offer an all-encompassing after-sales service that includes detailed online instructions for installation and commissioning. Our seasoned engineers are on hand to provide expert training and assist with the installation process, ensuring you receive the best support possible.
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