Introducing the groundbreaking Low-Pressure Compressor by Sanzhi (Henan) Compressor Co., Ltd.! Discover the pinnacle of industrial innovation with our Reliable Two-Stage Permanent Magnet VFD Screw Compressor for Heavy Duty Applications. This state-of-the-art, two-stage compression system with a permanent magnet variable frequency drive has been expertly designed to set a new standard in industrial performance and excellence. Our comprehensive selection of power options includes 15KW, 22KW, 30KW, 37KW, 45KW, 55KW, 75KW, 90KW, 110KW, 132KW, 160KW, 185KW, 200KW, and 250KW, ensuring this versatile powerhouse offers unmatched efficiency and reliability across various applications. Enhance and elevate your operations with this exceptional, meticulously engineered solution that is crafted to meet the diverse and challenging demands of today's modern industries.
Internal Structure Frontside
Internal Structure Backside
Working Principle
In the realm of air compression, an ideal scenario suggests that the energy for single-stage pressure transmission mirrors the cumulative energy requirements of multi-stage compression. However, real-world factors such as coupling power losses, bearing friction, and the fluid viscosity's cooling impact lead to increased operational power demands. By reducing the compression ratio at each stage, these inefficiencies are diminished. As a result, the overall power consumption for multi-stage compression is less than that of single-stage compression.
Our state-of-the-art two-stage screw air compressor is embedded with a highly sophisticated twin-stage rotary screw mechanism. This revolutionary design features an active screw in each stage driving a passive screw through a durable external power transmission system. The first stage employs a low-pressure screw group, transitioning to a high-pressure screw group in the second stage. Each screw is meticulously encased within a sealing air film. Throughout operation, the gas experiences a tri-phase process-suction, pressurization, and exhaust-ensuring unmatched compression efficiency.
First Stage Compression: In the initial phase of our two-stage screw air compressor, gas is expertly compressed via a low-pressure screw group. Initially drawn into the compression chamber through the suction valve, the gas undergoes high-speed compression by the screw rotor before seamlessly transitioning to the second stage.
Second Stage Compression: Within the second-stage screw group, the gas is further compressed in a more confined screw space, reaching higher temperatures and pressures. The process concludes when the exhaust valve opens, releasing the high-pressure gases from the system, thus completing the compression cycle.
Natural air is first drawn through the air filter into the initial compression stage, where it merges with a small amount of lubricating oil. This mixture is then compressed to an intermediate pressure. Moving into a cooling channel, it interacts with a substantial oil mist, significantly reducing its temperature. The cooled, compressed gas then proceeds to the second-stage rotor for its final compression to the ultimate exhaust pressure. Once fully compressed, the gas exits the system through the exhaust valve, concluding the compression cycle.
1) High efficiency of PM motor:Unleash outstanding efficiency with our sophisticated permanent magnet motor! Enjoy a vast constant torque range and a broad weak magnetic range, elevating efficiency by an impressive 20-30% compared to traditional motors. Even at non-rated frequencies, it maintains exceptional efficiency, assuring top-tier performance no matter the condition.
2) Two-stage compression unique air end:Discover the power of our groundbreaking two-stage compression screw design, featuring a uniquely crafted air end. With first and second-stage compression rotors ingeniously combined within a single casing and driven by gears, each rotor achieves optimal linear speed, unlocking unmatched compression efficiency.
3) Integrated frequency converter: Harness the capabilities of China's leading frequency system with our air compressor, offering extensive speed regulation and precision control. Users can tailor the frequency to match real-time gas demands, resulting in phenomenal energy savings and boosted operational efficiency.
4) Reduce internal leakage:By employing advanced two-stage compression technology, we lower the compression ratio for each stage, significantly reducing internal leakage from high-pressure to low-pressure ends, while dramatically enhancing volumetric efficiency.
5) Variable frequency start and the soft startof the motor are seamlessly achieved, dramatically lessening the impact on power grid equipment and safeguarding electrical components from potential damage.
6) Reduce energy consumption: Our state-of-the-art frequency conversion ranges from 25% to 100%, a remarkable leap from the ordinary 50% to 100%. Compared to fixed-speed compressors, it offers over 30% energy savings-5% more efficient than standard variable frequency compressors-ideal for systems with variable gas demands.
7) No transmission loss: Engineered for perfection, the permanent magnet motor and compressor feature an embedded integrated shaft direct connection. This compact design eliminates couplings and transmission parts, achieving a flawless 100% transmission efficiency.
8) Air cooling method: Experience unparalleled cooling efficiency with our high-performance air cooling method, which dramatically reduces compressed air temperature. Achieving near-isothermal compression minimizes pressure loss between stages, optimizing the compression ratio and overall system efficiency.
9)Smart Touch Controller:Our cutting-edge built-in intelligence minimizes manual intervention. Featuring a high-precision color electronic screen, it delivers sharp graphical displays, maintenance data, fault alerts, and safety shutdown notifications, ensuring seamless operation.
10)Special Type Intake Valve:Enjoy smooth engine performance with our automatically controlled intake valve, ensuring efficient fuel injection and lubricant flow. Its ultra-low oil circuit loss heightens overall efficiency, while the normally open solenoid valve closes during emergencies to prevent oil injection, ensuring system safety.
Ultra-low oil circuit loss enhances overall efficiency.
The normally open solenoid valve automatically closes during emergency stops to prevent oil injection, ensuring system safety.
11)Excellent Air Filter:Our superior air filter provides phenomenal air purification, delivering a pristine air system with three-stage filtration for unrivaled quality. It efficiently removes steam and dust, meeting even the most demanding emission standards.
12)High-Quality Soundproof Cotton:Our expertly engineered noise reduction housing, combined with premium soundproof cotton, significantly reduces vibrations and enhances noise management, ensuring a tranquil, efficient workspace.
13) Motor maintenance-free:Our innovative permanent magnet motor, devoid of internal bearings, eliminates the need for motor bearing maintenance or replacement, cutting long-term maintenance costs and boosting reliability.
14) Noise reduction:Indulge in the serene efficiency and advanced engineering of our state-of-the-art two-stage compression technology. This revolutionary system is designed to significantly lower the compression ratio, thereby dramatically minimizing operational noise levels, particularly during unloading phases. Revel in the tranquility of a quieter, more efficient workspace and enhance your productivity with the Professional Industrial Screw Compressor by Sanzhi - a perfect blend of innovation and effectiveness.
15) Effortless Maintenance and Service:Our pioneering two-stage compressor unit ingeniously maintains the familiar structure and systems of a traditional single-stage compressor. By simply omitting the screw air end, we ensure that maintenance and service remain as straightforward and user-friendly as ever. Experience hassle-free upkeep and consistently optimal performance with Sanzhi's Professional Industrial Screw Compressor, designed for simplicity and reliability.
| 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. |
1. Competitive Pricing
Experience unparalleled value by joining forces with Sanzhi (Henan) Compressor Co., Ltd. Gain a strategic edge with our unbeatable factory-direct prices, ensuring you remain a leader in today's competitive landscape.
2. Direct Transactions
Optimize your investment with our cost-efficient direct transactions. All our products are supplied straight from the factory, guaranteeing exceptional savings and unmatched reliability.
3. OEM & ODM Services
Leverage our extensive production prowess and management expertise. We offer bespoke OEM and ODM services, crafted to fulfill your exact specifications and address your unique needs with precision.
4. Customized Solutions
We excel in handling non-standard and export orders, adapting to distinct voltage, power, and pressure requirements. Share your customization needs with us, and we will provide solutions that align perfectly with your vision.
5. Small Order Acceptance
Begin your journey with a small trial order to experience the outstanding quality of our products firsthand. This ensures your satisfaction before you decide to expand your order.
6. Rapid Delivery
Rest easy with our swift and reliable delivery services. We prioritize the prompt delivery of your premium products, maintaining your operation's efficiency without interruption.
7. Comprehensive Authorization
Boost your distribution potential with our comprehensive authorization certificates. Confidently market and sell SANZHI brand products, bolstered by full certification and support.
Sanzhi (Henan) Compressor Co., Ltd is a prestigious leader in the industry, renowned for pioneering the production of top-notch screw air compressors and screw vacuum pumps. With more than ten years of unrivaled expertise, we offer a broad and sophisticated range of products that includes both normal and low-pressure screw air compressors, permanent magnet frequency conversion screw air compressors, as well as two-stage compression screw air compressors. Our specialized models cater to laser cutting needs, alongside versatile single-tank and double-tank mobile screw air compressors. Furthermore, we supply both electric and diesel mobile screw air compressors, complemented by state-of-the-art screw vacuum pumps.
Our cutting-edge production facility is equipped with advanced multi-air compressor assembly lines, guaranteeing outstanding precision and efficiency. Backed by a team of over 50 skilled professionals, we relentlessly refine our management systems, such as ERP, to drastically cut down lead times and ensure the rapid delivery of our superior quality products.
Our management systems are meticulously crafted to maintain the utmost quality standards. With our ISO9001 quality management certification, we implement stringent quality control measures. Each machine undergoes comprehensive evaluations at multiple stages, from material checks to production inspections and pre-delivery assessments, ensuring unparalleled product reliability and excellence.
Our stellar customer service initiates with a pre-sales team offering expert advice for choosing the perfect air equipment suited to diverse facilities. We offer a vast array of customization options, including appearance and configuration, and create tailor-made products to satisfy specific dealer requirements through our OEM services. Our dedicated sales and service team is always ready to provide swift and efficient post-sales support, ensuring all your needs are promptly met.
At Sanzhi (Henan) Compressor Co., Ltd, our unwavering commitment lies in delivering superior, trustworthy, and stable products. We strive to build enduring partnerships with our clients by guaranteeing efficient delivery, high-caliber machinery, and competitive pricing. Trust us to provide the ultimate compressed air solution tailored to your specifications.
Nestled in the scenic Xinzheng City, Henan Province, China, our factory is ideally located just 30 kilometers from Xinzheng International Airport, about an hour's drive away. We warmly welcome you to visit our facility and discover our exceptional offerings firsthand!
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a distinguished manufacturer with a specialization in screw air compressors, proudly possessing over a decade of industry expertise.
Q2. How do you control quality?
A: 1. Our raw materials undergo stringent inspections to ensure maximum quality.
2. The installation process is meticulously monitored to maintain high standards.
3. Every machine is required to pass at least 5 continuous hours of testing prior to dispatch to confirm optimal performance.
Q3. What information must I provide to get the suitable machine?
1. Your required air delivery capacity (Unit: CFM or m³/Min).
2. The desired working pressure (Unit: PSI, Bar or Mpa).
3. The voltage and frequency specifications of your country of residence (V/Hz).
4. Any additional accessories needed, such as an air tank, filters, or air dryers.
Share this information with us, and we will tailor a perfect solution for you!
Q4. What is the general unit conversion?
1Bar = 0.1Mpa = 14.5PSI
1m³/min = 35.32cfm
1KW = 1.34HP
Q5. What is the available voltage air compressor?
A: With Sanzhi, you have access to a versatile array of voltage options, including 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, and 440v/60hz/3p. Plus, we offer bespoke customization solutions tailored to perfectly align with your unique requirements.
Q6. How long is the delivery time?
A: For units with standard voltage specifications, you can expect a swift delivery within 15 working days following order confirmation. For tailored, non-standard solutions, please reach out to our dedicated sales team for precise timelines.
Q7. What's the payment term?
A: Our flexible payment terms are structured as follows: 30% T/T in advance, 40% T/T prior to shipment, with the final 30% T/T due upon receipt of the B/L copy. We accommodate payments in both USD and RMB for your convenience.
Q8. How about your warranty?
A: Enjoy peace of mind with our comprehensive warranty coverage: one year for the entire machine and an extended two-year warranty for the screw air compressor, with the exception of consumable spare parts.
Q9. What about the maintenance?
A: Initial maintenance is essential after 500 hours of operation. Thereafter, regular maintenance is advised every 2000-3000 hours, tailored to the specific conditions of your operational environment.
Q10. Can machines be run in high-temperature environment?
A: Certainly! Our machines are expertly engineered to perform optimally in high-temperature settings, boasting an impressive operating temperature range from -20° to 45° (-4ºF to 113ºF).
Q11. Do you offer OEM service?
A: Yes, we specialize in providing outstanding OEM & ODM services, supported by our skilled design team. We warmly welcome your custom orders to bring your vision to life.
Q12. How long could your air compressor be used?
A: Our air compressors are built for exceptional durability, typically delivering reliable service for over 10 years, ensuring sustained performance and value.
Q13. Will you provide some spare parts for the machines?
A: Absolutely, we offer a comprehensive range of high-quality spare parts designed to ensure the uninterrupted and efficient operation of your machines, maximizing longevity and peak performance.
Q14. How about your after-sales service?
A: Our after-sales service is second to none, offering unparalleled support with detailed online installation and commissioning guidance. We can also send expert engineers for personalized training and meticulous installation support whenever needed.
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