Introducing the Powerful 200KW 272HP Screw-Compressor from Sanzhi (Henan) Compressor Co., Ltd., your trusted China supplier. Experience unbeatable factory pricing on our state-of-the-art Permanent Magnet Variable Frequency Two-Stage Screw Air Compressor. Designed with superior German technology, this model features high-quality centrifugal fans, ensuring exceptional energy savings and high efficiency. Perfectly engineered for stationary industrial use, it delivers consistent performance and reliability for all your demanding applications.
Internal Structure Frontside
Internal Structure Backside
Working Principle
In an ideal air compression process, the power needed for single-stage pressure transmission matches the total power required for multi-stage compression. However, in reality, the actual working power increases due to factors such as coupling transmission power loss, bearing friction, and the cooling effect of liquid viscosity. Therefore, reducing the compression ratio at each stage minimizes useless power, ensuring that the total power for multi-stage compression is less than that for single-stage compression.
Our two-stage screw air compressor features a two-stage rotary screw design, comprising an active and a passive screw in each stage. The active screw drives the passive screw through an external power transmission device. The first stage employs a low-pressure rate screw group, while the second stage utilizes a high-pressure rate screw group. A sealing air film surrounds each screw, ensuring efficient gas compression through three stages: suction, pressurization, and exhaust.
First Stage Compression: In the first stage, the low-pressure rate screw group compresses the gas, drawing it into the screw compression chamber via the suction valve. With the high-speed rotation of the screw rotor, the gas is gradually compressed and transferred to the second stage.
Second Stage Compression: Gas enters the second stage's tighter screw space, where it's compressed at higher temperature and pressure. The exhaust valve then opens to expel the high-pressure gases from the system.
The compression process begins as natural air enters the first stage through an air filter, mixing with a small amount of lubricating oil in the compression chamber. This mixture is compressed to interstage pressure, then cooled in the cooling channel by contact with oil mist, significantly lowering its temperature. The cooled compressed gas proceeds to the second-stage rotor for additional compression to the final exhaust pressure. The entire process culminates 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 centrifugal fan features a high-speed rotating impeller that adeptly accelerates and decelerates the air. Entering from the axial direction, this sophisticated mechanism cools the motor faster than conventional air-cooled fans, ensuring continuous operation and significantly extending the compressor's lifespan.
1) High Efficiency of PM Motor: The permanent magnet motor boasts a wider constant torque and weak magnetic range, delivering an efficiency boost of 20-30% over regular motors. Its exceptional performance remains consistently high even when operating away from rated frequency, maintaining unparalleled motor efficiency.
2) Motor Maintenance-Free:The innovative design of the permanent magnet motor eliminates the need for internal bearings, thereby cutting down on the costs associated with motor bearing maintenance and replacement.
3) Integrated Frequency Converter: Utilizing China's premier frequency system, this converter offers a broad range of speed regulation with high precision. Tailored to your actual gas demand, it ensures exceptional energy-saving performance for the air compressor.
4) No Transmission Loss: Featuring a direct, integrated shaft connection between the permanent magnet motor and compressor, the design is more compact and eliminates the need for couplings or other transmission parts, ensuring 100% transmission efficiency.
5) Variable Frequency Start and Soft Startof the motor dramatically reduces the impact on power grid equipment, safeguarding electrical components from damage.
6) Reduce Energy Consumption: With a frequency conversion range of 25% to 100% (ordinary systems range from 50% to 100%), this air compressor can save more than 30% energy compared to fixed-speed models. It also outperforms ordinary variable frequency compressors by approximately 5%, with greater energy-saving benefits observed in systems experiencing large fluctuations in gas consumption.
7) Two-Stage Compression Unique Air End:The two-stage compression screw machine boasts a unique air end design. By integrating the first and second-stage compression rotors in one case and driving them through gears independently, each stage achieves optimal linear speed, resulting in superior compression efficiency.
8) Internal Spray Curtain Cooling Method: Our advanced internal spray curtain cooling method significantly reduces compressed air temperature, achieving near isothermal compression. This not only cuts pressure loss between stages but also reduces the compression ratio, enhancing overall compression efficiency.
9) Reduce Internal Leakage:By employing two-stage compression, the compression ratio for each stage is minimized, reducing internal leakage from the high-pressure end to the low-pressure end and thereby improving volumetric efficiency.
10) Noise Reduction:Two-stage compression effectively lowers the compression ratio, significantly reducing overall noise levels, particularly during unloading.
11) Easy to Maintain and Service:Aside from the screw air end, the two-stage compressor unit shares similar systems and structures with single-stage compression units, offering users convenient maintenance and use.
1. Unbeatable Price Advantage
We offer ex-factory prices directly to our customers, ensuring they remain highly competitive in their markets.
2. Direct Deal for Maximum Savings
All our products are supplied directly from the factory, enabling us to offer more cost-effective solutions.
3. Comprehensive OEM & ODM Services
Our factory's robust production and management capabilities allow us to provide exceptional OEM/ODM services tailored to your needs.
4. Customization to Fit Your Specific Needs
We accept a wide range of non-standard orders, including export orders and customization of voltage, power, and pressure. Contact us to discuss your unique requirements.
5. Small Orders Welcome
Start with a small trial order to evaluate the high quality of our products.
6. Swift and Reliable Delivery
Our high-quality products are delivered promptly to meet your timelines.
7. Full Authorization for Distributors
We provide complete authorization certificates for distributors, empowering you to sell our SANZHI brand products with confidence.
Sanzhi (Henan) Compressor Co., Ltd. is a distinguished manufacturer specializing in the production of screw air compressors and screw vacuum pumps, boasting over a decade of industry expertise. Our diverse product range includes normal pressure and low-pressure screw air compressors, permanent magnet frequency conversion screw air compressors, two-stage compression screw air compressors, specialized screw air compressors for laser cutting, and various mobile options such as single-tank, double-tank, electric, and diesel mobile screw air compressors. We also offer screw vacuum pumps, ensuring comprehensive solutions for all your compressed air needs.
Our production capabilities are unparalleled, featuring modern, lean multi-air compressor assembly lines that maximize efficiency. Supported by a dedicated team of over 50 employees, we continuously enhance our management systems, including ERP, to accelerate lead times and ensure fast delivery of high-quality products.
Our commitment to quality management is evidenced by our ISO9001 certification. We rigorously adhere to stringent quality control processes, ensuring each machine undergoes thorough material inspections, production checks, and pre-delivery evaluations before it leaves our facility.
In customer service, we excel both pre- and post-sales. Before purchase, we provide expert guidance on selecting the ideal air equipment for various applications, offering high customization options in appearance and configuration. We even develop unique OEM products to meet specific dealer requirements. Post-purchase, our professional sales and service team is poised for quick responses and top-notch support.
At Sanzhi (Henan) Compressor Co., Ltd., we pride ourselves on delivering superior, dependable products, fostering long-term relationships with our clients. With efficient delivery, quality machines, and competitive pricing, we are your trusted partner for all your compressed air solutions.
Our factory is conveniently located in Xinzheng City, Henan Province, China. We offer complimentary pick-up from Xinzheng International Airport to our factory, a scenic 30-kilometer journey that takes about an hour. We warmly welcome your visit!
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a professional manufacturer of screw air compressors, with over 10 years of industry experience.
Q2. How do you control quality?
A: 1. Rigorous inspection of raw materials.
2. Strict control of installation procedures.
3. Each machine undergoes a minimum of 5 hours of continuous testing before dispatch.
Q3. What information must I provide to get the suitable machine?
1. Desired air delivery capacity (Unit: CFM or m³/Min)
2. Required working pressure (Unit: PSI, Bar, or Mpa)
3. Voltage and frequency specifications of your country (V/Hz)
4. Need for additional accessories like air tank, filters, or air dryers.
Share these details with us, and we will tailor a perfect solution for you!
Q4. What is the general unit conversion?
1 Bar = 0.1 Mpa = 14.5 PSI
1 m³/min = 35.32 cfm
1 KW = 1.34 HP
Q5. What is the available voltage for air compressors?
A: Sanzhi air compressors support various voltages, including 380V/50Hz/3P, 400V/50Hz/3P, 415V/50Hz/3P, 220V/60Hz/3P, 440V/60Hz/3P, and can be customized to meet specific requirements.
Q6. How long is the delivery time?
A: For standard voltage configurations, your order will be ready for dispatch within 15 working days upon confirmation. For non-standard requirements, kindly get in touch with our sales team for tailored timelines.
Q7. What's the payment term?
A: Payment terms are structured as follows: 30% T/T in advance, 40% T/T before shipment, and the remaining 30% T/T upon receipt of the B/L copy. We accept payments in both USD and RMB.
Q8. How about your warranty?
A: Our warranty coverage includes one year for the entire machine and two years specifically for the screw air compressor, excluding consumable spare parts.
Q9. What about the maintenance?
A: Initial maintenance is required after 500 hours of operation. Subsequent routine maintenance should be performed every 2000-3000 hours, taking the actual operating environment into consideration.
Q10. Can machines be run in high-temperature environments?
A: Absolutely, our machines are designed to operate efficiently in high-temperature environments, with a working temperature range from -20° to 45° (-4ºF to 113ºF).
Q11. Do you offer OEM service?
A: Yes, we are equipped with a professional design team that welcomes both OEM and ODM orders with open arms.
Q12. How long could your air compressor be used?
A: Typically, our air compressors have a lifespan exceeding 10 years.
Q13. Will you provide some spare parts for the machines?
A: Yes, certainly. We will provide necessary spare parts for the machines.
Q14. How about your after-sales service?
A: We offer comprehensive after-sales support, including online guidance for installation and commissioning. Additionally, our engineers are available for onsite training and installation assistance.
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