Introducing the groundbreaking Low-Pressure Compressor, a stellar innovation exclusively from Sanzhi (Henan) Compressor Co., Ltd.! Embark on a journey of industrial excellence with this unparalleled Two-Stage Compression Permanent Magnet Variable Frequency Drive Screw Air Compressor, a true marvel of modern engineering. This remarkable machine offers an outstanding selection of power options: 15KW, 22KW, 30KW, 37KW, 45KW, 55KW, 75KW, 90KW, 110KW, 132KW, 160KW, 185KW, 200KW, and up to an impressive 250KW. This versatile powerhouse is designed to deliver unmatched efficiency and unwavering reliability in every application. Transform your operations with this state-of-the-art marvel, meticulously engineered to surpass the diverse and demanding needs of today's industries. Immerse yourself in the zenith of air compression technology with this high-capacity powerhouse, perfectly suited for heavy-duty applications. Featuring an advanced two-stage air cooling system, the compressor guarantees optimal performance and durability, making it the premier choice for businesses intent on streamlining operations and boosting productivity. Discover Sanzhi's pioneering innovation, where superior quality blends seamlessly with exceptional performance to redefine industrial expectations.
Internal Structure Frontside
Internal Structure Backside
Working Principle
Within a meticulously engineered air compression environment, the energy demand for single-stage compression parallels that of multi-stage compression. However, in practical applications, factors such as coupling power losses, bearing friction, and the fluid's viscosity cooling effects contribute to increased operational energy consumption. By adeptly reducing the compression ratio at each stage, these inefficiencies are substantially minimized. As a result, the overall power consumption for multi-stage compression becomes significantly lower than that of single-stage compression, ensuring a superior, cost-effective operation.
Presenting our groundbreaking two-stage screw air compressor, equipped with an elegantly sophisticated twin-stage rotary screw mechanism. This inventive design boasts an active screw at every stage, propelling a passive screw through a powerful external power transmission system. The initial stage features a low-pressure screw group, while the subsequent stage comprises a high-pressure screw group. Each screw is meticulously encased in a sealing air film. During its operation, the gas undergoes a three-phase cycle-suction, pressurization, and exhaust-delivering exceptional compression efficiency and top-tier performance.
First Stage Compression: At the commencement of our two-stage screw air compressor's operation, the gas is expertly compressed using a 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 primary compression, the gas is seamlessly conveyed to the second stage, setting the groundwork for further compression.
Second Stage Compression: In the subsequent stage, the gas undergoes further compression within a more confined screw space, escalating to elevated temperatures and pressures. The process culminates as the exhaust valve opens, allowing the high-pressure gases to exit the system, thereby completing the entire compression cycle with precision and effectiveness.
Natural air is initially drawn through the air filter into the first compression stage, where it combines with a minute amount of lubricating oil. This mixture is then compressed to an intermediate pressure level. Following this stage, the gas transitions into a cooling channel, where it interacts with a substantial amount of oil mist, significantly reducing its temperature. The cooled, compressed gas then progresses to the second-stage rotor for its final compression to the ultimate exhaust pressure. Upon reaching this stage, the fully compressed gas exits the system via the exhaust valve, concluding the compression cycle with remarkable precision and efficiency.
1) High efficiency of PM motor:Discover unrivaled energy optimization with the cutting-edge permanent magnet motor. This remarkable motor propels efficiency by an impressive 20-30% over traditional motors, thanks to its extensive constant torque range and weak magnetic dynamics. Even beyond its rated frequency, it maintains exceptional efficiency, ensuring peak performance every time.
2) Two-stage compression unique air end:Our innovative two-stage compression screw system is designed with a uniquely engineered air end, seamlessly integrating dual compression rotors within a single casing. Direct gear-driven rotors operate at optimal linear speeds, significantly boosting compression efficiency and delivering unmatched reliability.
3) Integrated frequency converter: Equipped with the premier frequency system in China, our compressor offers a vast speed regulation range with exceptional accuracy. Users can easily customize the frequency to match real-time gas needs, resulting in substantial energy savings and superior performance.
4) Reduce internal leakage:Our groundbreaking two-stage compression technology cuts down the compression ratio per stage, effectively curbing internal leakage from high to low-pressure ends. This advancement means improved volumetric efficiency and outstanding overall compressor performance.
5) Variable frequency start and the soft startHarnessing variable frequency and soft start features, our motor significantly lessens the impact on power grid systems, protecting electrical components from potential harm while extending longevity.
6) Reduce energy consumption: Our state-of-the-art frequency conversion system operates proficiently from 25% to 100%, vastly surpassing the average 50% to 100% range. Compared to fixed-speed compressors, it offers over 30% energy savings and an additional 5% efficiency improvement over standard variable frequency systems, perfect for variable gas demands.
7) No transmission loss: The efficient design featuring a direct connection between the permanent magnet motor and compressor eradicates transmission components. This guarantees flawless 100% transmission efficiency for peak, uncompromised performance.
8) Air cooling method: Our highly efficient air cooling system provides extraordinary cooling capability, significantly reducing the temperature of compressed air. This approach promotes nearly isothermal compression, minimizes pressure loss, optimizes the compression ratio, and enhances overall efficiency.
9)Smart Touch Controller: Our advanced smart controller is engineered with built-in intelligence, reducing manual interventions. Featuring a high-resolution color electronic display, it provides user-friendly graphical interfaces, maintenance reminders, fault alerts, and safety shutdown notifications for ongoing smooth operation.
10)Special Type Intake Valve:The automatic opening facilitates seamless engine fuel injection and oil circulation, boosting system efficiency.
With a remarkably low oil circuit loss, our system's efficiency experiences a significant boost.
The normally open solenoid valve secures a tight seal during emergency stops, preventing oil injection and ensuring maximum system safety.
11)Excellent Air Filter:Our superior air filter offers unmatched air purification with its robust three-stage filtration system, ensuring top-notch air quality. It effectively removes steam and dust, exceeding the highest emission standards for eco-friendly operations.
12)High-Quality Soundproof Cotton:With an innovative noise reduction housing and premium soundproof cotton, our design significantly minimizes operational vibrations and noise, delivering a quieter, more efficient work environment.
13) Motor maintenance-free:Our cutting-edge maintenance-free permanent magnet motor design eliminates the internal bearings, thereby eradicating the need for bearing maintenance and replacement. This ingenious innovation not only significantly slashes long-term upkeep costs but also enhances the reliability of our compressor systems, ensuring they operate at peak performance for extended periods.
14) Noise reduction:Embrace the serenity offered by the state-of-the-art two-stage compression technology, ingeniously developed by Sanzhi (Henan) Compressor Co., Ltd. This pioneering system is masterfully engineered to optimize the compression ratio, dramatically cutting down operational noise levels, especially during unloading phases. Enjoy a more peaceful and efficient workspace, which in turn heightens your productivity, thanks to the Sanzhi Efficient Robust Two-Stage Permanent Magnet VFD Screw Compressor. Trust in Sanzhi's unparalleled engineering prowess to elevate your industrial operations.
15) Effortless Maintenance and Unmatched Service:Introducing our revolutionary two-stage compressor unit, crafted by Sanzhi (Henan) Compressor Co., Ltd., which retains the familiar architecture and systems of a single-stage compressor, with the sole variance lying in the screw air end. This breakthrough design ensures maintenance and service are as straightforward and user-friendly as ever. Experience maintenance that is free of hassle, coupled with consistent, superior performance, with the Sanzhi Efficient Robust Two-Stage Permanent Magnet VFD Screw Compressor. Rely on Sanzhi for seamless maintenance and outstanding 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 equips you with a powerful competitive advantage in your industry. Boost your market standing through our strategic pricing superiority, designed to enhance your profitability.
2. Direct Transactions
Optimize your purchasing experience with our cost-effective and reliable direct transaction approach. Our efficient logistics pipeline ensures that products are dispatched directly from our factory to your doorstep, guaranteeing substantial savings and a consistently dependable supply chain.
3. OEM & ODM Services
Capitalize on our state-of-the-art production and management capabilities to access top-tier OEM and ODM services. Every offering is crafted to align with your specific needs, ensuring that all custom requirements are meticulously executed to perfection.
4. Customized Solutions
Excel in managing non-standard and export orders with our bespoke solutions. We cater to varying voltage, power, and pressure needs, expertly crafting responses to meet your unique specifications. Share your distinct requirements, and we'll develop solutions that effortlessly align with your precise expectations.
5. Small Order Acceptance
Initiate your partnership with us through a small trial order and experience the superior quality of our products firsthand. Assure your complete satisfaction before scaling up to larger orders, providing you with ultimate peace of mind and confidence in your decision.
6. Rapid Delivery
Enjoy tranquility with our fast and reliable delivery services. We place a high priority on the swift arrival of our premium products, ensuring your operations continue unhindered and at peak efficiency.
7. Comprehensive Authorization
Enhance your distribution capabilities with our strong authorization certifications. Market and distribute SANZHI brand products with absolute confidence, fortified by our extensive and thorough certification process that underpins your success.
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 showcases the truly impressive capacity of our compressors, ensuring they meet the diverse demands of industrial applications with unparalleled performance and efficiency.
1KW = 1.34 HP. This power conversion underscores the formidable capability of our compressors to deliver substantial power, ensuring consistent and reliable operation even under the most demanding conditions.
Q5. What is the available voltage air compressor?
A: Sanzhi (Henan) Compressor Co., Ltd. offers a comprehensive array of voltage options, expertly catering to global requirements. Choose from 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, and 440v/60hz/3p. We excel in providing meticulously customized solutions tailored to your unique electrical specifications, ensuring seamless compatibility and superior performance.
Q6. How long is the delivery time?
A: For standard voltage units, our streamlined processes guarantee dispatch within an impressive 15 working days post order confirmation. For non-standard voltage requirements, consult our dedicated sales team to receive a precise delivery schedule, expertly customized to your specific needs.
Q7. What's the payment term?
A: Our payment terms are crafted for maximum convenience: 30% T/T in advance, 40% T/T before shipment, and the final 30% T/T upon receiving the B/L copy. We accommodate payments in both USD and RMB, providing flexibility and ease for seamless transactions.
Q8. How about your warranty?
A: Sanzhi confidently offers a robust warranty, ensuring peace of mind: one year for the entire machine and two years for the screw air compressor. Consumable spare parts are the only exception, underscoring our commitment to quality and durability.
Q9. What about the maintenance?
A: Initial maintenance is crucial and should be conducted after 500 operating hours. Thereafter, maintenance intervals are recommended between 2000-3000 hours, tailored to match your specific working environment, ensuring optimal performance and longevity.
Q10. Can machines be run in high-temperature environment?
A: Absolutely! Our machines are engineered for exceptional performance, even under extreme temperatures. They maintain efficient operation within a broad range of -20° to 45° (-4ºF to 113ºF), ensuring reliability and endurance in the most challenging conditions.
Q11. Do you offer OEM service?
A: Yes, we specialize in offering both OEM and ODM services. Our expert design team is adept at bringing your custom orders to life, crafting tailor-made solutions that align seamlessly with your specifications, enhancing brand identity and product differentiation.
Q12. How long could your air compressor be used?
A: Our air compressors are meticulously designed for exceptional longevity, boasting a remarkable lifespan that typically surpasses 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 offer a comprehensive range of premium spare parts, designed 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 provide stellar after-sales support, offering detailed online installation and commissioning guidance. If required, we can arrange for expert engineers to deliver hands-on training and meticulous installation assistance, ensuring seamless integration and optimal operation.
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