Introducing the groundbreaking Low-Pressure Compressor, proudly presented by Sanzhi (Henan) Compressor Co., Ltd.! This state-of-the-art Two-Stage Compression Permanent Magnet Variable Frequency Drive Screw Air Compressor stands as a true masterpiece of engineering excellence, poised to redefine standards in industrial performance and reliability. With an impressive selection of power options available - including 15KW, 22KW, 30KW, 37KW, 45KW, 55KW, 75KW, 90KW, 110KW, 132KW, 160KW, 185KW, 200KW, and 250KW - this versatile innovation promises unmatched efficiency and consistent operation. Propel your business into the future with this exceptional technological marvel, meticulously designed to meet the diverse and demanding challenges of today's most advanced industries.
Internal Structure Frontside
Internal Structure Backside
Working Principle
In an ideal scenario for air compression, the energy needed for single-stage pressure transmission matches the cumulative energy demands of a multi-stage compression process. However, in reality, several factors such as losses from coupling power, friction in bearings, and the cooling influences of fluid viscosity contribute to increased operational power needs. By lowering the compression ratio at every stage, these inefficiencies can be minimized. As a result, the total power consumption for a multi-stage compression process is typically lower compared to that of a single-stage compression.
Step into the future of air compression with the cutting-edge design of our two-stage screw air compressor! Crafted with precision, this innovative system features a sophisticated twin-stage rotary screw mechanism. Each stage houses an active screw that propels a passive counterpart, powered by a robust external transmission system. Designed for superior performance, the first stage employs a low-pressure screw group, seamlessly transitioning to a high-pressure screw group in the second phase. Every screw is carefully encased in a protective sealing air film. Experience efficiency like never before as the gas is processed through a dynamic tri-phase cycle: suction, pressurization, and exhaust, working in perfect harmony to deliver exceptional compression results.
First Stage Compression: Experience the pinnacle of efficiency in the first stage of our two-stage screw air compressor. Here, gas is precisely compressed using a low-pressure screw group. The journey begins as gas is expertly drawn into the compression chamber via the suction valve. Observe the transformation as the screw rotor's rapid rotation compresses the gas, preparing it seamlessly for the transition to the second stage.
Second Stage Compression: Elevate your compression journey with the second stage screw group, where gas undergoes further compressive refinement within a strategically confined screw space. This phase achieves elevated temperatures and pressures, culminating in a robust release through the exhaust valve. The high-pressure gases escape with triumph, concluding the seamless compression cycle.
Natural air begins its sophisticated journey by being meticulously drawn through the air filter into the initial compression stage, combining with a precise amount of lubricating oil. This enriched mixture undergoes compression to an intermediate pressure. The process then leads into a cooling channel, where the gas engages with an abundance of oil mist, significantly reducing its temperature. As the cooled, compressed gas advances to the second-stage rotor, it experiences its final compression, achieving the ultimate exhaust pressure. This intricately refined process concludes as the fully compressed gas exits the system triumphantly through the exhaust valve, completing the sophisticated compression cycle.
1) High efficiency of PM motor:Experience unparalleled energy efficiency with our advanced permanent magnet motor. This remarkable innovation showcases expansive torque and a broad weak magnetic range, elevating efficiency by an impressive 20-30% compared to conventional motors. It consistently performs at peak efficiency, ensuring outstanding performance even in varied operating conditions.
2) Two-stage compression unique air end:Meet the forefront of innovation with our revolutionary two-stage compression screw technology. Ingeniously crafted, our air end combines the prowess of first and second-stage compression rotors within a single casing, propelled by precision gears, each rotor achieving its perfect velocity. This outstanding design redefines compression efficiency to unprecedented levels.
3) Integrated frequency converter: Unleash the potential of China's premier frequency system within our air compressor, offering extensive speed control and unparalleled precision. Customize the frequency to meet your exact gas requirements, ensuring extraordinary energy efficiency and operational excellence.
4) Reduce internal leakage:By utilizing cutting-edge two-stage compression technology, we lower the compression ratio for each stage, significantly curbing internal leakage from high to low-pressure zones and dramatically enhancing volumetric efficiency.
5) Variable frequency start and the soft startof the motor are seamlessly executed, significantly reducing impacts on power grid systems and protecting electrical components from potential damage.
6) Reduce energy consumption: Our frequency conversion technology operates efficiently from 25% to 100%, surpassing the conventional 50% to 100% range. Energy savings exceed 30% compared to fixed-speed compressors and approximately 5% over standard variable frequency models, especially in fluctuating demand scenarios.
7) No transmission loss: Our groundbreaking integrated shaft direct connection between the permanent magnet motor and compressor guarantees a streamlined design. With no couplings or transmission parts, we achieve a remarkable 100% transmission efficiency.
8) Air cooling method: Maximize benefits with our high-energy efficient air cooling system, offering superior cooling that significantly lowers compressed air temperature. Near-isothermal compression minimizes pressure loss between stages, reducing compression ratios and enhancing overall efficiency.
9)Smart Touch Controller: Our sophisticated built-in intelligence minimizes manual intervention. Featuring a high-definition color electronic display, it presents intuitive graphical interfaces, maintenance updates, fault alarms, and safety shutdown notifications to ensure seamless operations.
10)Special Type Intake Valve:Its automated operation ensures smooth engine fuel and oil flow. Ultra-low oil circuit loss significantly enhances efficiency. In emergencies, the normally open solenoid valve automatically closes 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 superior air filter offers exceptional purification, maintaining an immaculate air system with its advanced three-stage filtration to ensure top-notch air quality. It effectively eliminates steam and dust, adhering to the strictest emission standards.
12)High-Quality Soundproof Cotton:Our expertly crafted noise reduction housing and premium soundproof cotton effectively diminish vibrations and significantly lower noise levels, fostering a tranquil and efficient work environment.
13) Motor maintenance-free:Our maintenance-free permanent magnet motor, devoid of internal bearings, eliminates the need for bearing maintenance or replacement, drastically reducing long-term maintenance costs while enhancing reliability.
14) Noise reduction:Step into a world of unparalleled tranquility with our revolutionary two-stage compression technology. This cutting-edge system expertly minimizes the compression ratio, delivering an extraordinary decrease in operational noise, especially during unloading phases. Experience a quieter, more efficient workspace and elevate your productivity with the Professional Industrial Screw Compressor from Sanzhi, setting new standards in acoustic comfort and performance excellence.
15) Effortless Maintenance and Service:Our sophisticated two-stage compressor unit beautifully preserves the familiar structure and systems of a traditional single-stage compressor. By simply excluding the screw air end, we ensure that maintenance and service are straightforward and user-friendly for everyone. Enjoy seamless, worry-free upkeep and consistently maintain peak performance with Sanzhi's Professional Industrial Screw Compressor, meticulously 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 joining forces with Sanzhi (Henan) Compressor Co., Ltd. Gain exclusive access to our factory-direct prices, ensuring you maintain a strategic advantage in the competitive market landscape.
2. Direct Transactions
Revel in enhanced cost-efficiency and absolute assurance through our direct transaction model. Products are supplied straight from the factory to you, guaranteeing maximum savings and reliability.
3. OEM & ODM Services
Harness our robust production and management expertise. We offer bespoke OEM and ODM services, meticulously tailored to your specifications, ensuring we meet and exceed your unique needs.
4. Customized Solutions
We excel in fulfilling non-standard and export orders, adapting to specific voltage, power, and pressure requirements. Present us with your custom needs, and we will deliver solutions precisely aligned with your expectations.
5. Small Order Acceptance
Start your journey with a small trial order and experience the superior quality of our products firsthand, ensuring your complete satisfaction before scaling up your orders.
6. Rapid Delivery
Enjoy peace of mind 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
Enhance your distribution potential with our extensive authorization certifications. Market and sell SANZHI brand products confidently, bolstered by our comprehensive certification support.
Rooted in a legacy of innovation, Sanzhi (Henan) Compressor Co., Ltd shines as a paragon of excellence within the manufacturing domain. We are experts in the creation of cutting-edge screw air compressors and vacuum pumps. With an impressive legacy of over a decade, our diverse product offerings encompass normal and low-pressure screw air compressors, as well as sophisticated permanent magnet frequency conversion models, and advanced two-stage compression units. Additionally, our range includes compressors meticulously designed for laser cutting, along with adaptable single-tank and double-tank mobile screw options. Furthermore, we offer both electric and diesel-driven mobile screw compressors, enhanced by our revolutionary screw vacuum pumps.
Our state-of-the-art production facility features cutting-edge multi-air compressor assembly lines, guaranteeing exceptional efficiency and precision in every manufacturing endeavor. Driven by a dedicated team of over 50 highly skilled professionals, we continuously enhance our management systems, such as ERP, to minimize lead times and deliver outstanding products with remarkable speed.
Our rigorously developed management systems are intricately designed to uphold the highest quality standards. Endorsed by the esteemed ISO9001 certification, we strictly adhere to rigorous quality control protocols. Every unit undergoes comprehensive inspections at each phase-from material assessment and production oversight to pre-delivery evaluations-ensuring unmatched reliability and excellence.
Our outstanding customer service journey begins with a pre-sales team that offers expert guidance to help you select the ideal air equipment tailored to diverse facilities. We provide extensive customization options, encompassing appearance and configuration, to create bespoke products that cater to the unique requirements of dealers through our OEM services. Our professional sales and service team is always poised to offer swift and effective post-sales support, ensuring every need is promptly met.
At Sanzhi (Henan) Compressor Co., Ltd, our unwavering commitment to delivering superior, reliable, and stable products is our hallmark. We are dedicated to nurturing lasting partnerships with our clients, ensuring efficient delivery, high-quality machinery, and competitive pricing-to offer you the quintessential compressed air solution tailored to your requirements.
Nestled in the picturesque Xinzheng City, Henan Province, China, our factory enjoys a prime location just 30 kilometers from Xinzheng International Airport, a mere hour's drive away. We warmly invite you to visit and witness our exceptional product offerings firsthand!
FAQ
Q1. Are you a trading company or manufacturer?
A: We proudly stand as a distinguished manufacturer specializing in screw air compressors, boasting over a decade of profound industry expertise.
Q2. How do you control quality?
A: 1. We conduct rigorous inspections on our raw materials to confirm they meet the pinnacle of quality standards.
2. We closely supervise the precise installation process to secure perfection.
3. Each machine is subjected to an exhaustive minimum of 5 continuous hours of testing prior to dispatch, ensuring 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.
Provide us with this information, and we will customize the perfect solution for your needs!
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 embrace versatility by offering a wide spectrum of voltage options, including 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, and 440v/60hz/3p. Additionally, our bespoke customization services ensure that your unique specifications are perfectly met.
Q6. How long is the delivery time?
A: For our standard voltage models, anticipate a swift delivery within just 15 working days following order confirmation. For non-standard specifications, please connect with our dedicated sales team for customized timelines and personalized assistance.
Q7. What's the payment term?
A: We offer flexible payment terms to suit your needs: an initial 30% T/T in advance, 40% T/T before shipment, and the final 30% T/T upon presentation of the B/L copy. Transactions are conveniently facilitated in both USD and RMB.
Q8. How about your warranty?
A: Experience assurance with our comprehensive warranty: enjoy one full year for the entire machine and an extended two-year term for the screw air compressor. Please be aware that consumable spare parts are not included in this warranty.
Q9. What about the maintenance?
A: To maintain optimal performance, we recommend the initial maintenance after 500 hours of operation, followed by regular maintenance intervals of every 2000-3000 hours, adaptable to your specific working environment conditions.
Q10. Can machines be run in high-temperature environment?
A: Absolutely! Our state-of-the-art machines are crafted to perform exceptionally in high-temperature environments, supporting a robust operational range from a brisk -20° to a warm 45° (-4ºF to 113ºF).
Q11. Do you offer OEM service?
A: Indeed, we are proud to offer both OEM and ODM services, powered by our skilled and professional design team. We warmly welcome custom orders and are dedicated to bringing your unique visions to life.
Q12. How long could your air compressor be used?
A: Engineered for durability and resilience, our air compressors boast an exceptional service life, typically exceeding an impressive 10 years of dependable operation.
Q13. Will you provide some spare parts for the machines?
A: Certainly, we offer a full array of high-quality spare parts, meticulously designed to ensure uninterrupted, efficient operation of your machinery, thereby extending its lifespan and maintaining peak performance.
Q14. How about your after-sales service?
A: We take pride in delivering exceptional after-sales service, which includes comprehensive online support for installation and commissioning. If necessary, we can also dispatch expert engineers to provide hands-on training and precise installation guidance.
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