Introducing the groundbreaking Low-Pressure Compressor, an extraordinary innovation exclusively from Sanzhi (Henan) Compressor Co., Ltd.! Embark on an unrivaled journey of industrial excellence with our spectacular Two-Stage Compression Permanent Magnet Variable Frequency Drive Screw Air Compressor. This exceptional piece of engineering marvel is designed to offer an outstanding array of power options, ranging from 15KW to an impressive 250KW. Engineered with precision and versatility in mind, this powerhouse of reliability and efficiency is set to revolutionize your operations. Experience the transformative power of this state-of-the-art compressor, meticulously crafted to exceed the diverse and demanding requirements of today's industries. Immerse yourself in the pinnacle of air compression technology with this high-capacity machine, ideally suited for heavy-duty applications. With its sophisticated two-stage air cooling system, the compressor ensures unrivaled performance and longevity, establishing itself as the premier choice for businesses aiming to streamline operations and maximize productivity. Discover the pioneering brilliance of Sanzhi, where superior quality harmonizes seamlessly with exceptional performance to elevate industrial expectations to new heights.
Internal Structure Frontside
Internal Structure Backside
Working Principle
Discover the expertly designed air compression environment that unlocks the secret to superior energy efficiency. While single-stage compression systems require energy similar to multi-stage systems, factors like coupling power losses, bearing friction, and fluid-induced cooling effects often increase energy usage. By strategically optimizing the compression ratio at each stage, these inefficiencies are significantly minimized. As a result, the overall energy consumption for multi-stage compression is considerably lower than single-stage systems, ensuring a more refined, cost-effective, and efficient operation.
Introducing our cutting-edge two-stage screw air compressor, a masterpiece of engineering with a finely tuned twin-stage rotary screw mechanism. This brilliant design features an active screw in each stage, driving a passive screw through a robust external power transmission system. The initial stage houses a low-pressure screw group, followed by a high-pressure screw group in the next stage. Each screw is carefully encased in a protective sealing air film. During operation, the gas undergoes a meticulous three-phase cycle of suction, pressurization, and exhaust, resulting in unprecedented compression efficiency and exceptional performance.
First Stage Compression: The journey begins as our two-stage screw air compressor expertly compresses gas using the low-pressure screw group. Initially, the gas is drawn into the compression chamber through the suction valve, where the rapid rotation of the screw rotor compresses it. After this initial compression, the gas seamlessly transitions to the second stage, setting the stage for further advancements in compression.
Second Stage Compression: Advancing to the next stage, the gas undergoes intensified compression within a more compact screw space, reaching higher temperatures and pressures. This process culminates when the exhaust valve opens, allowing the high-pressure gases to exit the system. This completes the entire compression cycle with unmatched precision and effectiveness.
The air's journey commences as it enters via the air filter into the first compression stage, merging with an exact measure of lubricating oil. This mixture is compressed to an intermediate pressure before moving into a cooling channel, where it interacts with a substantial oil mist to significantly lower its temperature. The cooled and compressed gas then proceeds to the second-stage rotor for its final compression to achieve ultimate exhaust pressure. Upon reaching the final phase, the completely compressed gas exits through the exhaust valve, concluding the cycle with remarkable precision and efficiency.
1) High efficiency of PM motor:Experience unparalleled energy savings with our cutting-edge permanent magnet motor that outperforms traditional models by an incredible 20-30% efficiency. Engineered with a wide constant torque range and pioneering weak magnetic dynamics, it ensures peak efficiency even beyond its rated frequency, delivering consistent and optimal performance every single time.
2) Two-stage compression unique air end:Introducing our innovative two-stage compression screw system, featuring a uniquely designed air end. This system effortlessly combines dual compression rotors within a single casing. By utilizing direct gear-driven rotors at optimal linear speeds, it dramatically enhances compression efficiency and ensures unmatched reliability.
3) Integrated frequency converter: Equipped with China's leading frequency system, our compressor provides an extensive range of speed regulation with precise accuracy. Users can easily fine-tune the frequency to match real-time gas demands, leading to substantial energy savings and boosted performance.
4) Reduce internal leakage:Our groundbreaking two-stage compression technology lowers the compression ratio for each stage, significantly reducing internal leakage from high to low-pressure ends. This enhancement results in improved volumetric efficiency and superior overall compressor performance.
5) Variable frequency start and the soft startBy employing variable frequency and soft start features, our motor minimizes the impact on power grid systems, effectively protecting electrical components from potential damage and extending their lifespan.
6) Reduce energy consumption: Our state-of-the-art frequency conversion system operates efficiently within a remarkable range of 25% to 100%, far exceeding the common 50% to 100% range. It delivers over 30% energy savings compared to fixed-speed compressors, plus an extra 5% efficiency enhancement over standard variable frequency systems, perfectly catering to variable gas demands.
7) No transmission loss: With a direct connection between the permanent magnet motor and compressor, our efficient design eliminates the need for transmission components. This guarantees flawless 100% transmission efficiency, ensuring peak and uncompromised performance every time.
8) Air cooling method: Our highly efficient air cooling system delivers exceptional cooling power, significantly reducing the temperature of compressed air. This advanced method promotes near-isothermal compression, minimizes pressure loss, optimizes the compression ratio, and enhances overall efficiency.
9)Smart Touch Controller: Our next-generation smart controller is crafted with built-in intelligence to minimize manual interventions. Featuring a high-resolution color electronic display, it provides user-friendly graphical interfaces, maintenance reminders, fault alerts, and safety shutdown notifications, ensuring seamless and continuous operation.
10)Special Type Intake Valve:The automatic opening enables smooth engine fuel injection and oil circulation, significantly enhancing overall system efficiency.
Exhibiting remarkably low oil circuit loss, our system achieves a substantial boost in efficiency.
The normally open solenoid valve ensures a robust seal during emergency stops, preventing oil injection and maximizing system safety.
11)Excellent Air Filter:Our top-tier air filter delivers unmatched air purification with its robust three-stage filtration system, ensuring premium air quality. It efficiently removes steam and dust, meeting and surpassing the highest emission standards for environmentally conscious operations.
12)High-Quality Soundproof Cotton:Boasting an innovative noise reduction housing and high-quality soundproof cotton, our design substantially reduces operational vibrations and noise, creating a quieter and more efficient work environment.
13) Motor maintenance-free:Step into the future of compressor technology with our pioneering maintenance-free permanent magnet motor design. This inventive approach eliminates internal bearings, thereby eradicating the need for their upkeep and replacement. Consequently, you benefit from a substantial reduction in long-term maintenance costs. Our compressor systems promise enhanced reliability, maintaining optimal performance consistently over extended periods. Embrace our innovation for exceptional cost-effectiveness and unparalleled dependability.
14) Noise Reduction: Experience the serene environment created by Sanzhi (Henan) Compressor Co., Ltd.'s cutting-edge two-stage compression technology. This extraordinary system is meticulously engineered to optimize the compression ratio, leading to a notable decrease in operational noise levels, especially during unloading phases. Enjoy a quieter, more efficient work setting that enhances productivity, all thanks to the Sanzhi Efficient Robust Two-Stage Permanent Magnet VFD Screw Compressor. Trust in Sanzhi's unmatched engineering excellence to elevate your industrial operations.
15) Effortless Maintenance and Unmatched Service: Discover the future of maintenance ease with our groundbreaking two-stage compressor unit, crafted by Sanzhi (Henan) Compressor Co., Ltd. This advanced design maintains the familiar structure and systems of a single-stage compressor, with the only difference being the screw air end. This innovative design ensures that maintenance and service remain straightforward and user-friendly. Enjoy seamless maintenance coupled with consistent, superior performance with the Sanzhi Efficient Robust Two-Stage Permanent Magnet VFD Screw Compressor. Rely on Sanzhi for effortless maintenance and exceptional results.
| 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
Unlock the gateway to exceptional value with Sanzhi (Henan) Compressor Co., Ltd. By partnering with us, you benefit from exclusive, factory-direct pricing that arms you with a formidable competitive advantage in your industry. Propel your market presence through our strategic pricing excellence, meticulously designed to elevate your profitability and market position.
2. Direct Transactions
Enhance your purchasing journey with our cost-effective and seamless direct transaction model. Our streamlined logistics pipeline ensures that products reach you directly from our factory, promising significant savings and a consistently reliable supply chain, tailored to meet your needs efficiently.
3. OEM & ODM Services
Leverage our advanced production and management capabilities to access exemplary OEM and ODM services. Each offering is crafted to align precisely with your bespoke needs, ensuring that all custom requirements are executed with impeccable attention to detail and excellence.
4. Customized Solutions
Excel in managing non-standard and export orders with our bespoke solutions. We cater to diverse voltage, power, and pressure specifications, expertly crafting responses to fulfill your unique specifications. Share your distinct requirements, and we'll develop solutions that seamlessly align with your precise expectations to perfection.
5. Small Order Acceptance
Begin your journey with us through a small trial order and witness the unparalleled quality of our products firsthand. Ensure your complete satisfaction before increasing to larger orders, providing you with ultimate peace of mind and unwavering confidence in your choice.
6. Rapid Delivery
Experience peace of mind with our fast and dependable delivery services. We prioritize the swift arrival of our superior products, ensuring your operations remain uninterrupted and function at maximum efficiency.
7. Comprehensive Authorization
Elevate your distribution potential with our robust authorization certifications. Market and distribute SANZHI brand products with absolute assurance, backed by our extensive and rigorous certification process that empowers your success and fortifies your business growth.
Sanzhi (Henan) Compressor Co., Ltd is a prestigious pioneer in the realm of cutting-edge screw air compressors and vacuum pumps. With over a decade of unassailable industry experience, we proudly present an innovative array of products. Our extensive range encompasses both standard and low-pressure screw air compressors, highly efficient permanent magnet frequency conversion screw air compressors, and the sophisticated two-stage compression screw air compressors. We address specialized demands with our laser cutting screw air compressors, in addition to versatile single-tank and double-tank mobile screw air compressors. Our electric and diesel mobile screw air compressors are meticulously crafted for superior performance. Moreover, our state-of-the-art screw vacuum pumps are designed to meet the most stringent industrial standards.
Our ultra-modern production facility boasts sophisticated multi-air compressor assembly lines, ensuring superb efficiency and precision in every product. Driven by a dedicated team of over 50 highly skilled experts, we are committed to optimizing our management systems, such as ERP, to drastically reduce lead times and ensure the swift delivery of premium products. Our unwavering pursuit of innovation places us at the vanguard of the industry, establishing new standards of excellence.
Our meticulously developed management systems are crafted to maintain the highest quality benchmarks. With the esteemed ISO9001 quality management system certification, we enforce stringent quality control procedures. Each machine is subjected to exhaustive inspections throughout various stages, including material selection, production checks, and pre-delivery assessments, ensuring unmatched product reliability and excellence. Our steadfast commitment to quality provides you with absolute assurance of superior performance.
Experience our exceptional customer service, beginning with our pre-sales team providing expert guidance to select the perfect air equipment for a variety of facilities. We offer comprehensive customization options, including design and configuration modifications, and deliver bespoke solutions to fulfill specific dealer requirements through our OEM services. Our professional sales and support team is always ready to provide prompt and effective post-sales assistance, ensuring your needs are met swiftly and accurately. Enjoy unparalleled customer care with Sanzhi.
At Sanzhi (Henan) Compressor Co., Ltd, we are committed to delivering products that exemplify superiority, reliability, and stability. Dedicated to nurturing enduring partnerships with our clients, we guarantee timely delivery, world-class machinery, and competitive pricing. Our objective is to provide the optimal compressed air solution tailored to your requirements, delivering unmatched value, performance, and satisfaction.
Nestled in the picturesque Xinzheng City, Henan Province, China, our factory is conveniently located just 30 kilometers from Xinzheng International Airport, making it easily accessible-approximately an hour's drive away. We warmly invite you to visit our facility and witness our exceptional offerings firsthand! Come and discover the distinctive Sanzhi experience in person.
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a highly regarded manufacturer specializing in screw air compressors, with over a decade of deep-rooted industry expertise. Our extensive experience distinctly sets us apart in the market, showcasing our exceptional capabilities.
Q2. How do you control quality?
A: 1. We conduct thorough inspections of our raw materials to ensure exceptional quality before commencing production.
2. Our installation process is meticulously monitored at every phase to ensure precision.
3. Each machine undergoes a minimum of 5 continuous hours of rigorous testing before dispatch, assuring peak performance and reliability.
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 craft a flawlessly tailored solution just for you! Our expertise guarantees that we meet your exact needs with precision and excellence.
Q4. What is the general unit conversion?
The essential conversion you need to remember: 1Bar equals 0.1Mpa or 14.5PSI, a fundamental measure for precision and accuracy in your industrial tasks.
1m³/min = 35.32 cfm. This precise conversion highlights the outstanding capability of our compressors, enabling them to cater to the extensive needs of industrial applications with unmatched performance and efficiency.
1KW = 1.34 HP. This power conversion underscores the remarkable potential of our compressors to deliver substantial power, ensuring consistent and trustworthy operation even under the most demanding circumstances.
Q5. What is the available voltage air compressor?
A: Sanzhi (Henan) Compressor Co., Ltd. presents a versatile range of voltage options, skillfully addressing global demands. Select from 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, and 440v/60hz/3p. We specialize in providing precisely tailored solutions to meet your specific electrical requirements, ensuring optimal compatibility and top-tier performance.
Q6. How long is the delivery time?
A: For standard voltage units, our efficient processes ensure dispatch within a remarkable 15 working days post order confirmation. For non-standard voltage needs, consult our dedicated sales team to receive a detailed delivery schedule, expertly customized to your specific needs.
Q7. What's the payment term?
A: Our payment terms are designed for maximum convenience: 30% T/T in advance, 40% T/T prior to shipment, and the final 30% T/T upon receiving the B/L copy. We accept payments in both USD and RMB, providing flexibility and ease for smooth transactions.
Q8. How about your warranty?
A: Sanzhi proudly offers a robust warranty, providing peace of mind: one year for the whole machine and two years for the screw air compressor. Consumable spare parts are the only exception, emphasizing our commitment to quality and durability.
Q9. What about the maintenance?
A: Initial maintenance is vital and should be performed after 500 operating hours. Subsequent maintenance is recommended at intervals between 2000-3000 hours, tailored to your specific working environment, ensuring optimal performance and longevity.
Q10. Can machines be run in high-temperature environment?
A: Absolutely! Our machines are crafted for exceptional performance, even in extreme temperatures. They maintain efficient operation within a wide range of -20° to 45° (-4ºF to 113ºF), ensuring reliability and durability in the toughest conditions.
Q11. Do you offer OEM service?
A: Yes, we excel in offering both OEM and ODM services. Our expert design team is skilled at realizing your custom orders, creating tailor-made solutions that perfectly align with your specifications, enhancing brand identity and product differentiation.
Q12. How long could your air compressor be used?
A: Our air compressors are meticulously engineered for exceptional longevity, offering a remarkable lifespan that typically exceeds 10 years of reliable and efficient service, ensuring sustained productivity and value.
Q13. Will you provide some spare parts for the machines?
A: Absolutely, we supply a comprehensive range of premium spare parts, engineered to ensure your machines continue to operate seamlessly and maintain peak performance, maximizing uptime and operational efficiency over the long term.
Q14. How about your after-sales service?
A: We deliver exceptional after-sales support, offering detailed online installation and commissioning guidance. If needed, we can arrange for expert engineers to provide hands-on training and thorough installation assistance, ensuring seamless integration and optimal operation.
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