Introducing the groundbreaking Low-Pressure Compressor brought to you by Sanzhi (Henan) Compressor Co., Ltd.! This state-of-the-art Two-Stage Compression Permanent Magnet Variable Frequency Drive Screw Air Compressor is a masterpiece of engineering, destined to set new standards in industrial performance and reliability. With a diverse array of power options at your fingertips - including 15KW, 22KW, 30KW, 37KW, 45KW, 55KW, 75KW, 90KW, 110KW, 132KW, 160KW, 185KW, 200KW, and 250KW - this adaptable wonder promises unrivaled efficiency and dependable operation. Propel your business forward with this advanced technological marvel, designed with precision to satisfy the varied and rigorous demands of today's cutting-edge industries.
Internal Structure Frontside
Internal Structure Backside
Working Principle
In an ideal air compression scenario, the energy required for single-stage pressure transmission equates to the combined energy demands of multi-stage compression. Realistically, however, factors such as coupling power losses, bearing friction, and the cooling effects of fluid viscosity result in higher operational power requirements. Reducing the compression ratio at each stage minimizes these inefficiencies. Consequently, the total power consumption for multi-stage compression is lower than that of single-stage compression.
Discover the future of air compression with our innovative two-stage screw air compressor! Engineered with a state-of-the-art twin-stage rotary screw mechanism, this revolutionary system boasts an active screw in each stage that propels a passive screw through a powerful external power transmission setup. Designed for excellence, the first stage utilizes a low-pressure screw group, seamlessly transitioning to a high-pressure screw group in the second stage. Each precision-crafted screw is enveloped in a protective sealing air film. Embark on a journey of efficiency as the gas undergoes a dynamic tri-phase process: suction, pressurization, and exhaust, all working in harmony to deliver unmatched compression performance.
First Stage Compression: Unleash the power of efficiency in the initial stage of our two-stage screw air compressor. Here, gas is adeptly compressed using a low-pressure screw group. The process begins as the gas is expertly drawn into the compression chamber through the suction valve. Witness the magic as the screw rotor's high-speed rotation compresses the gas, effortlessly preparing it for a smooth transition to the second stage.
Second Stage Compression: Elevate your compression experience in the second stage screw group, where the gas undergoes further compression within a strategically confined screw space. This phase achieves elevated temperatures and pressures, culminating in a powerful release through the exhaust valve. The high-pressure gases escape triumphantly, completing the seamless compression cycle.
Natural air embarks on its journey by being meticulously drawn through the air filter into the first compression stage, where it unites with a precise amount of lubricating oil. This enriched mixture is compressed to an intermediate pressure. The process then leads into a cooling channel, where the gas engages with an abundant amount of oil mist, significantly reducing its temperature. As the cooled, compressed gas progresses to the second-stage rotor, it undergoes its final compression to reach the ultimate exhaust pressure. The culmination of this sophisticated process sees the fully compressed gas exiting the system through the exhaust valve, effectively completing the compression cycle.
1) High efficiency of PM motor:Experience the ultimate in energy performance with our state-of-the-art permanent magnet motor. This powerhouse offers a broad torque and weak magnetic range, delivering a staggering 20-30% efficiency improvement over traditional motors. Even away from typical operating frequencies, the motor maintains peak efficiency, guaranteeing superior performance under any conditions.
2) Two-stage compression unique air end:Discover innovation with our cutting-edge two-stage compression screw technology. Our uniquely engineered air end integrates first and second-stage compression rotors in one casing, driven by precision gears, each rotor attaining its optimal speed. This design maximizes compression efficiency like never before.
3) Integrated frequency converter: Harness the power of China's leading frequency system in our air compressor, providing extensive speed regulation and unmatched precision. Tailor the frequency to your exact gas needs, achieving extraordinary energy savings and operational excellence.
4) Reduce internal leakage:Employing pioneering two-stage compression technology, we decrease the compression ratio for each stage, significantly reducing internal leakage from high to low-pressure areas and vastly improving volumetric efficiency.
5) Variable frequency start and the soft startof the motor are seamlessly executed, drastically minimizing impacts on power grid systems and safeguarding electrical components from potential harm.
6) Reduce energy consumption: Our frequency conversion technology operates efficiently from 25% to 100%, far surpassing the typical 50% to 100% range. Energy savings soar over 30% compared to fixed-speed compressors and approximately 5% over standard variable frequency models, especially in fluctuating demand scenarios.
7) No transmission loss: Our innovative integrated shaft direct connection between the permanent magnet motor and compressor ensures a compact design. With no couplings or transmission parts, we achieve unprecedented 100% transmission efficiency.
8) Air cooling method: Benefit from our high-energy efficient air cooling system, delivering exceptional cooling that dramatically reduces compressed air temperature. Near-isothermal compression minimizes pressure loss between stages, reducing compression ratios and boosting overall efficiency.
9)Smart Touch Controller: Our advanced built-in intelligence minimizes manual intervention. Featuring a high-definition color electronic display, it offers intuitive graphical interfaces, maintenance updates, fault alarms, and safety shutdown notifications to ensure smooth operations.
10)Special Type Intake Valve:Its automated operation guarantees fluid engine fuel and oil flow. Ultra-low oil circuit loss significantly boosts efficiency. In emergencies, the normally open solenoid valve closes automatically to prevent oil injection, ensuring safe operation.
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 premier air filter offers outstanding purification, maintaining a pristine air system with its advanced three-stage filtration to deliver exceptional air quality. It effectively eradicates steam and dust, adhering to the strictest emission standards.
12)High-Quality Soundproof Cotton:Our expertly designed noise reduction housing and premium soundproof cotton minimize vibrations and significantly reduce noise levels, creating a serene, efficient work environment.
13) Motor maintenance-free:Our maintenance-free permanent magnet motor, lacking internal bearings, eradicates the need for bearing upkeep or replacement, slashing long-term maintenance costs while boosting reliability.
14) Noise reduction:Step into a realm of unmatched serenity with our groundbreaking two-stage compression technology. This avant-garde system masterfully decreases the compression ratio, ensuring a remarkable reduction in operational noise, particularly during unloading phases. Immerse yourself in a quieter, more efficient workspace and boost your productivity with the Professional Industrial Screw Compressor from Sanzhi, leading the way in acoustic comfort and performance excellence.
15) Effortless Maintenance and Service:Our state-of-the-art two-stage compressor unit brilliantly retains the familiar structure and systems of a traditional single-stage compressor. By solely omitting the screw air end, we guarantee that maintenance and service are straightforward and intuitive for everyone. Enjoy seamless, stress-free upkeep and maintain peak performance consistently with Sanzhi's Professional Industrial Screw Compressor, engineered for ease and reliability in every aspect.
| 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 aligning with Sanzhi (Henan) Compressor Co., Ltd. Gain exclusive access to our factory-direct prices, ensuring you maintain an edge in the competitive market landscape.
2. Direct Transactions
Benefit from enhanced cost-efficiency and absolute assurance with our direct transaction model. All products are supplied straight from the factory to you, guaranteeing utmost savings and reliability.
3. OEM & ODM Services
Leverage our robust production and management prowess. We provide bespoke OEM and ODM services, meticulously tailored to your specifications, ensuring we meet and exceed your unique needs.
4. Customized Solutions
We excel in handling non-standard and export orders, adapting to specific voltage, power, and pressure needs. Bring us your custom requirements, and we will deliver solutions precisely aligned with your expectations.
5. Small Order Acceptance
Initiate your journey with a small trial order and personally experience the outstanding quality of our products, securing your complete satisfaction before scaling up your orders.
6. Rapid Delivery
Rest assured with our efficient and timely delivery service. We ensure your premium products arrive promptly, maintaining the smooth and uninterrupted flow of your operations.
7. Comprehensive Authorization
Amplify your distribution potential with our extensive authorization certifications. Market and sell SANZHI brand products confidently, bolstered by our comprehensive certification backing.
Nestled in innovation, Sanzhi (Henan) Compressor Co., Ltd stands as a beacon of excellence in the manufacturing sector, specializing in advanced screw air compressors and vacuum pumps. With over ten years of unmatched experience, we offer a diverse range of products, including both normal and low-pressure screw air compressors, permanent magnet frequency conversion variants, and sophisticated two-stage compression models. Our line also features compressors crafted specifically for laser cutting, alongside versatile single-tank and double-tank mobile screw options. Additionally, we provide both electric and diesel-driven mobile screw compressors, complemented by our pioneering screw vacuum pumps.
Our cutting-edge production plant boasts state-of-the-art multi-air compressor assembly lines, ensuring remarkable efficiency and precision in manufacturing. With a dedicated workforce of over 50 highly skilled employees, we continually refine our management systems, including ERP, to minimize lead times and ensure the swift delivery of top-tier products.
Our meticulously crafted management systems are devoted to maintaining the pinnacle of quality standards. With the prestigious ISO9001 certification backing us, we adhere to stringent quality control procedures. Each unit undergoes thorough inspections at every stage, from material checks and production monitoring to pre-delivery evaluations, guaranteeing unparalleled reliability and excellence.
Our exceptional customer service journey commences with a pre-sales team offering expert insights to help select the perfect air equipment tailored to a variety of facilities. We offer comprehensive customization options, covering appearance and configuration, and provide bespoke products to meet distinct dealer requirements through our OEM services. Our professional sales and service team remains ready to deliver swift and effective post-sales support, ensuring your every need is promptly addressed.
At Sanzhi (Henan) Compressor Co., Ltd, our unwavering dedication to delivering superior, reliable, and stable products is evident. We are committed to fostering enduring partnerships with our clients, ensuring efficient delivery, high-quality machinery, and competitive pricing to provide you with the ideal compressed air solution for your needs.
Situated in the scenic Xinzheng City, Henan Province, China, our factory enjoys a prime location just 30 kilometers from Xinzheng International Airport, roughly an hour's drive away. We cordially invite you to visit and witness our exceptional offerings firsthand!
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a renowned manufacturer specializing in screw air compressors, proudly equipped with over a decade of industry expertise.
Q2. How do you control quality?
A: 1. Our raw materials undergo uncompromising inspections to ensure they meet the highest quality standards.
2. The precise installation process is closely monitored to guarantee perfection.
3. Each machine undergoes a rigorous minimum of 5 continuous hours of testing before dispatch, ensuring peak 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: At Sanzhi, we're committed to versatility, offering a spectrum of voltages such as 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, and 440v/60hz/3p. Additionally, we provide bespoke customization options to perfectly align with your distinct specifications.
Q6. How long is the delivery time?
A: For our standard voltage models, expect swift delivery within just 15 working days post order confirmation. Should your needs extend to non-standard specifications, we invite you to reach out to our dedicated sales team for precise timelines and personalized assistance.
Q7. What's the payment term?
A: Our flexible payment terms include an initial 30% T/T in advance, followed by 40% T/T before shipment, and a final 30% T/T upon presentation of the B/L copy. We facilitate transactions in both USD and RMB for your convenience.
Q8. How about your warranty?
A: Enjoy peace of mind with our comprehensive warranty: one full year for the entire machine and an extended two-year term specifically for the screw air compressor. Please note that consumable spare parts are not covered under this warranty.
Q9. What about the maintenance?
A: To ensure optimal performance, the initial maintenance is recommended after 500 hours of operation. Thereafter, regular maintenance should be scheduled every 2000-3000 hours, adjusted according to your specific working environment conditions.
Q10. Can machines be run in high-temperature environment?
A: Absolutely, our innovative machines are expertly engineered to deliver exceptional performance in high-temperature environments, supporting a robust working temperature range from a chilly -20° to a warm 45° (-4ºF to 113ºF).
Q11. Do you offer OEM service?
A: Indeed, we take pride in providing both OEM and ODM services, powered by our talented and professional design team. We warmly welcome your custom orders and are eager to bring your unique visions to life.
Q12. How long could your air compressor be used?
A: Crafted for durability and endurance, our air compressors boast a remarkable service life, typically extending beyond an impressive 10 years of reliable operation.
Q13. Will you provide some spare parts for the machines?
A: Certainly, we offer a comprehensive array of premium spare parts, designed to ensure the unbroken, efficient operation of your machinery, thereby prolonging its life and maintaining peak performance.
Q14. How about your after-sales service?
A: We pride ourselves on delivering outstanding after-sales service, which includes thorough online support for installation and commissioning. If needed, we can also dispatch expert engineers to provide practical training and meticulous installation guidance.
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