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
Within this expertly crafted air compression environment lies the key to superior energy efficiency. For single-stage compression, energy demands are comparable to those of multi-stage systems. However, real-world dynamics such as coupling power losses, bearing friction, and the viscosity-induced cooling effects of the fluid often lead to increased energy consumption. By skillfully optimizing the compression ratio at each stage, these inefficiencies are dramatically reduced. Consequently, the total power consumption of multi-stage compression is markedly reduced compared to single-stage, ensuring a more refined and cost-efficient operation.
Introducing our state-of-the-art two-stage screw air compressor, featuring an exquisitely refined twin-stage rotary screw mechanism. This ingenious design showcases an active screw in each stage, driving a passive screw via a robust external power transmission system. The initial stage is equipped with a low-pressure screw group, followed by a high-pressure screw group in the subsequent stage. Each screw is enveloped in a protective sealing air film. During operation, the gas undergoes a meticulous three-phase cycle-suction, pressurization, and exhaust-resulting in unparalleled compression efficiency and outstanding performance.
First Stage Compression: The journey begins with our two-stage screw air compressor expertly compressing gas using the low-pressure screw group. The gas is first drawn into the compression chamber through the suction valve, where the swift rotation of the screw rotor compresses it. Following this initial compression, the gas is seamlessly transitioned to the second stage, laying the foundation for further compression advancements.
Second Stage Compression: Continuing onto the next stage, the gas experiences intensified compression within a more compact screw space, reaching elevated temperatures and pressures. This process culminates as the exhaust valve opens, allowing the high-pressure gases to exit the system, thus completing the entire compression cycle with unparalleled precision and effectiveness.
Air begins its journey by entering through the air filter into the first compression stage, merging with a precise amount of lubricating oil. This blend is compressed to an intermediate pressure. Next, the gas moves into a cooling channel, engaging with a substantial oil mist, which significantly lowers the temperature. The cooled, compressed gas then advances to the second-stage rotor for its final compression to the ultimate exhaust pressure. Upon reaching this final phase, the fully compressed gas exits the system via the exhaust valve, concluding the compression cycle with exceptional precision and efficiency.
1) High efficiency of PM motor:Experience unmatched energy efficiency with our state-of-the-art permanent magnet motor. This dynamic motor enhances efficiency by an outstanding 20-30% compared to traditional models. Thanks to its wide constant torque range and innovative weak magnetic dynamics, it maintains superior efficiency even beyond its rated frequency, ensuring consistently optimal performance every time.
2) Two-stage compression unique air end:Introducing our groundbreaking two-stage compression screw system, designed with a uniquely crafted air end. This system effortlessly integrates dual compression rotors in a single casing. With direct gear-driven rotors at optimal linear speeds, it remarkably boosts compression efficiency and delivers unparalleled reliability.
3) Integrated frequency converter: Featuring the foremost frequency system in China, our compressor offers a broad range of speed regulation with remarkable precision. Users can effortlessly adjust the frequency to meet real-time gas demands, achieving significant energy savings and enhanced performance.
4) Reduce internal leakage:Our revolutionary two-stage compression technology reduces the compression ratio per stage, effectively minimizing internal leakage from high to low-pressure ends. This leads to improved volumetric efficiency and superior overall compressor performance.
5) Variable frequency start and the soft startUtilizing variable frequency and soft start capabilities, our motor significantly reduces the impact on power grid systems, safeguarding electrical components from potential damage and prolonging their life span.
6) Reduce energy consumption: Our cutting-edge frequency conversion system operates efficiently from 25% to 100%, far exceeding the typical 50% to 100% range. It provides over 30% energy savings when compared to fixed-speed compressors, along with an additional 5% efficiency improvement over standard variable frequency systems, ideal for variable gas demands.
7) No transmission loss: Our efficient design, featuring a direct connection between the permanent magnet motor and compressor, eliminates the need for transmission components. This ensures flawless 100% transmission efficiency, guaranteeing peak, uncompromised performance every time.
8) Air cooling method: Our highly efficient air cooling system provides exceptional cooling power, significantly lowering the temperature of compressed air. This method promotes near-isothermal compression, minimizes pressure loss, optimizes the compression ratio, and enhances overall efficiency.
9)Smart Touch Controller: Our advanced smart controller is designed with built-in intelligence to reduce manual interventions. With a high-resolution color electronic display, it offers user-friendly graphical interfaces, maintenance reminders, fault alerts, and safety shutdown notifications for continuous smooth operation.
10)Special Type Intake Valve:The automatic opening facilitates seamless engine fuel injection and oil circulation, enhancing overall system efficiency.
With remarkably low oil circuit loss, our system achieves a significant boost in efficiency.
The normally open solenoid valve ensures a secure seal during emergency stops, preventing oil injection and ensuring maximum system safety.
11)Excellent Air Filter:Our superior air filter provides unmatched air purification with its robust three-stage filtration system, ensuring top-quality air. It effectively removes steam and dust, surpassing the highest emission standards for environmentally friendly operations.
12)High-Quality Soundproof Cotton:Featuring an innovative noise reduction housing and premium soundproof cotton, our design significantly reduces operational vibrations and noise, providing a quieter, more efficient work environment.
13) Motor maintenance-free:Discover the future of compressor technology with our groundbreaking maintenance-free permanent magnet motor design, which ingeniously eliminates internal bearings. This revolutionary advancement not only obliterates the need for bearing upkeep and replacements but also significantly curtails long-term maintenance expenses. As a result, our compressor systems deliver enhanced reliability, consistently operating at peak performance over extended durations. Choose our innovation for superior cost-effectiveness and unmatched dependability.
14) Noise Reduction: Immerse yourself in the tranquility afforded by Sanzhi (Henan) Compressor Co., Ltd.'s avant-garde two-stage compression technology. This remarkable system is meticulously crafted to optimize the compression ratio, leading to a dramatic reduction in operational noise levels, particularly during unloading phases. Revel in a calmer, more efficient work environment that boosts productivity, courtesy of the Sanzhi Efficient Robust Two-Stage Permanent Magnet VFD Screw Compressor. Place your trust in Sanzhi's unrivaled engineering expertise to elevate the standards of your industrial operations.
15) Effortless Maintenance and Unmatched Service: Unveil the future of hassle-free maintenance with our revolutionary two-stage compressor unit, meticulously engineered by Sanzhi (Henan) Compressor Co., Ltd. This state-of-the-art design retains the familiar architecture and systems of a single-stage compressor, with the only difference being the screw air end. This innovative design guarantees that maintenance and service remain as straightforward and user-friendly as ever. Enjoy seamless maintenance paired with consistent, superior performance with the Sanzhi Efficient Robust Two-Stage Permanent Magnet VFD Screw Compressor. Depend on Sanzhi for effortless maintenance and extraordinary outcomes.
| 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?
1Bar = 0.1Mpa = 14.5PSI
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 highlights the impressive ability of our compressors to deliver significant power, ensuring stable and reliable operation even under the most challenging conditions.
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.
){kind=link}