Introducing the revolutionary Low-Pressure Compressor, proudly brought to you by Sanzhi (Henan) Compressor Co., Ltd.! This exceptional Two-Stage Compression Permanent Magnet Variable Frequency Drive Screw Air Compressor is a marvel of modern engineering, setting unparalleled benchmarks in industrial excellence. Offering an impressive array of power options, including 15KW, 22KW, 30KW, 37KW, 45KW, 55KW, 75KW, 90KW, 110KW, 132KW, 160KW, 185KW, 200KW, and up to 250KW, this versatile titan guarantees superior efficiency and steadfast reliability across all uses. Elevate your operations with this cutting-edge marvel, meticulously crafted to meet and exceed the diverse and demanding requirements of contemporary industries. Experience the pinnacle of air compression technology with this high-capacity powerhouse designed for heavy-duty applications. With its advanced two-stage air cooling system, this compressor ensures optimal performance and longevity, making it the ideal choice for businesses seeking to streamline operations and maximize productivity. Discover the future of industrial compressors with Sanzhi's pioneering innovation, where quality meets performance to redefine your expectations.
Internal Structure Frontside
Internal Structure Backside
Working Principle
Within a meticulously controlled air compression environment, the energy demand for single-stage compression equates to that of multi-stage compression. However, real-world factors such as coupling power losses, bearing friction, and the fluid's viscosity cooling effects lead to higher operational energy consumption. By strategically lowering the compression ratio at each stage, these inefficiencies can be remarkably minimized. Consequently, the total power consumption for multi-stage compression becomes less than single-stage compression, ensuring a more efficient, cost-effective operation.
Introducing our revolutionary two-stage screw air compressor, featuring an elegantly advanced twin-stage rotary screw mechanism. This inventive design includes an active screw at each stage, driving a passive screw through a robust external power transmission system. The initial stage houses a low-pressure screw group, while the subsequent stage contains a high-pressure screw group. Each screw is artfully encased in a sealing air film. During its operation, the gas is guided through a three-phase cycle-suction, pressurization, and exhaust-delivering outstanding compression efficiency and performance.
First Stage Compression: At the onset of our two-stage screw air compressor's operation, the gas is skillfully compressed using a low-pressure screw group. Initially, the gas is drawn into the compression chamber through the suction valve, where the swift rotation of the screw rotor compresses it. After this initial compression, the gas is seamlessly transferred to the second stage, paving the way for further compression.
Second Stage Compression: In the next stage, the gas undergoes further compression within a more compact screw space, escalating to higher temperatures and pressures. The process reaches its peak as the exhaust valve opens, allowing the elevated pressure gases to discharge from the system, thus completing the entire compression cycle.
Natural air is first drawn through the air filter into the initial compression stage, where it combines with a trace amount of lubricating oil. This mixture is then compressed to an intermediate pressure level. Following this stage, the gas advances into a cooling channel, interacting with a significant amount of oil mist, which substantially lowers its temperature. The cooled, compressed gas then moves 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 precision and efficiency.
1) High efficiency of PM motor:Experience unparalleled energy efficiency with our state-of-the-art permanent magnet motor. This motor offers a substantial 20-30% efficiency boost compared to conventional motors, thanks to its vast constant torque and weak magnetic range. Even at frequencies above its rated threshold, it continues to deliver outstanding efficiency, ensuring optimal performance at all times.
2) Two-stage compression unique air end:Our advanced two-stage compression screw system is equipped with a uniquely engineered air end, which masterfully incorporates dual compression rotors within a singular casing. These rotors, powered directly by gears, operate at their ideal linear speeds, thereby enhancing compression efficiency and ensuring unparalleled reliability.
3) Integrated frequency converter: Outfitted with China's leading frequency system, our compressor excels with a broad speed regulation range and remarkable precision. Users can effortlessly adjust the frequency to align with actual gas requirements, achieving notable energy savings and superior operational efficiency.
4) Reduce internal leakage:Our innovative two-stage compression technology significantly reduces the compression ratio for each stage, effectively minimizing internal leakage from high to low-pressure ends. This improvement translates to enhanced volumetric efficiency and superior overall compressor performance.
5) Variable frequency start and the soft startFeaturing variable frequency and soft start capabilities, our motor significantly reduces the strain on power grid systems, safeguarding electrical components from potential damage and enhancing longevity.
6) Reduce energy consumption: Our cutting-edge frequency conversion system functions efficiently across a range from 25% to 100%, significantly outperforming the standard 50% to 100% range. Compared to fixed-speed compressors, it achieves energy savings of over 30%, with an additional 5% efficiency gain beyond typical variable frequency systems, ideal for managing fluctuating gas demands.
7) No transmission loss: The streamlined design of the direct connection structure between the permanent magnet motor and compressor eliminates transmission components. This ensures flawless 100% transmission efficiency, delivering peak performance without compromise.
8) Air cooling method: Our highly effective air cooling system offers exceptional cooling capacity, significantly reducing compressed air temperatures. This nearly isothermal compression minimizes pressure loss, optimizes the compression ratio, and enhances overall efficiency.
9)Smart Touch Controller: Our sophisticated smart controller boasts built-in intelligence, minimizing the need for manual intervention. Featuring a high-resolution color electronic display, it offers intuitive graphical interfaces, maintenance alerts, fault warnings, and safety shutdown notifications, ensuring seamless, uninterrupted operation.
10)Special Type Intake Valve:The automatic opening ensures seamless engine fuel injection and oil circulation, elevating system efficiency.
With an ultra-low oil circuit loss, our system efficiency sees a marked enhancement.
The normally open solenoid valve securely seals during emergency stops, preventing oil injection and ensuring maximum system safety.
11)Excellent Air Filter:Our high-performance air filter delivers unmatched air purification with a robust three-stage filtration system, ensuring superior air quality. It effectively eliminates steam and dust, surpassing even the highest emission standards for an environmentally friendly operation.
12)High-Quality Soundproof Cotton:With a compact noise reduction housing and premium soundproof cotton, our design significantly reduces operational vibrations and noise, providing a quieter and more efficient work environment.
13) Motor maintenance-free:Our maintenance-free permanent magnet motor, free of internal bearings, eliminates the need for bearing maintenance and replacement. This innovation reduces long-term upkeep costs while boosting reliability.
14) Noise reduction:Immerse yourself in unparalleled tranquility with the latest two-stage compression technology, meticulously crafted by Sanzhi (Henan) Compressor Co., Ltd. This groundbreaking system strategically optimizes the compression ratio, resulting in a significant reduction in operational noise, particularly during unloading phases. Revel in a quieter, more efficient work environment and elevate your productivity with the Sanzhi Efficient Robust Two-Stage Permanent Magnet VFD Screw Compressor for Heavy Duty Tasks. Enhance your industrial operations with Sanzhi's superior engineering expertise.
15) Effortless Maintenance and Unmatched Service:Our trailblazing two-stage compressor unit, conceptualized by Sanzhi (Henan) Compressor Co., Ltd., retains the familiar structure and systems of a single-stage compressor, with the only distinction being the screw air end. This innovative design guarantees that maintenance and service remain straightforward and user-friendly. Experience hassle-free upkeep and consistent, top-tier performance with the Sanzhi Efficient Robust Two-Stage Permanent Magnet VFD Screw Compressor for Heavy Duty Tasks. Trust Sanzhi for seamless 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 unbeatable value with Sanzhi (Henan) Compressor Co., Ltd. By choosing us, you gain exclusive access to factory-direct pricing, empowering you with a distinct competitive edge in your market. Elevate your position with our superior pricing strategy.
2. Direct Transactions
Experience cost-efficiency and unwavering reliability with our direct transaction model. Our seamless logistics ensure products are delivered directly from our factory to you, maximizing your savings while guaranteeing a steady, dependable supply chain.
3. OEM & ODM Services
Leverage our cutting-edge production and management prowess for premium OEM and ODM services. We tailor each offering to meet your unique specifications, ensuring that every custom requirement is flawlessly realized to perfection.
4. Customized Solutions
Master the art of handling non-standard and export orders with our tailored solutions. We expertly meet diverse voltage, power, and pressure specifications. Convey your unique demands, and we'll engineer solutions that seamlessly match your precise expectations.
5. Small Order Acceptance
Begin your journey with us through a small trial order to witness the exceptional quality of our products firsthand. Ensure your complete satisfaction before committing to larger orders, giving you peace of mind.
6. Rapid Delivery
Experience peace of mind with our swift and reliable delivery services. We prioritize the expedited arrival of our high-quality products, ensuring your operations remain uninterrupted and efficient.
7. Comprehensive Authorization
Amplify your distribution network with our robust authorization certifications. Market and distribute SANZHI brand products with unwavering confidence, bolstered by our extensive and thorough certification process.
Sanzhi (Henan) Compressor Co., Ltd is a prestigious leader in the manufacturing of state-of-the-art screw air compressors and screw vacuum pumps. With over a decade of unmatched industry prowess, we proudly showcase a dynamic product range. Our offerings include both normal and low-pressure screw air compressors, highly efficient permanent magnet frequency conversion screw air compressors, and advanced two-stage compression screw air compressors. We cater to specialized needs with our screw air compressors engineered for laser cutting, alongside versatile single-tank and double-tank mobile screw air compressors. Our electric and diesel mobile screw air compressors are designed for optimal performance. Furthermore, our cutting-edge screw vacuum pumps are engineered to satisfy the most rigorous industrial requirements.
Our cutting-edge production facility is equipped with sophisticated multi-air compressor assembly lines, ensuring outstanding efficiency and precision in every product. Powered by a team of over 50 highly skilled professionals, we are committed to refining our management systems, like ERP, to substantially minimize lead times and ensure the rapid delivery of top-quality products. Our relentless drive for innovation keeps us at the forefront of the industry, setting new benchmarks for excellence.
Our meticulously crafted management systems are designed to uphold the pinnacle of quality standards. With the prestigious ISO9001 quality management system certification, we implement rigorous quality control protocols. Each machine undergoes exhaustive inspections throughout multiple stages - from material selection and production checks to pre-delivery assessments, ensuring unparalleled product reliability and excellence. Our unwavering dedication to quality provides you with absolute peace of mind, guaranteeing superior performance.
Experience our outstanding customer service, which starts with our pre-sales team offering expert guidance to select the ideal air equipment suited for various facilities. We offer extensive customization options, including design and configuration adjustments, and provide bespoke solutions to fulfill specific dealer requirements through our OEM services. Our professional sales and support team is ever-ready to deliver prompt and effective post-sales assistance, ensuring your needs are swiftly and accurately met. Enjoy unrivaled customer care with Sanzhi.
At Sanzhi (Henan) Compressor Co., Ltd, we are dedicated to delivering products that epitomize superiority, reliability, and stability. Committed to nurturing lasting partnerships with our clients, we promise timely delivery, world-class machinery, and competitive pricing. Our goal is to provide the optimal compressed air solution tailored to your requirements, delivering unparalleled value, performance, and satisfaction.
Nestled in the charming Xinzheng City, Henan Province, China, our factory is advantageously 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 extraordinary offerings firsthand! Come and discover the Sanzhi difference in person.
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a renowned manufacturer specializing in screw air compressors with over a decade of profound industry expertise. Our extensive experience distinctly sets us apart in the market.
Q2. How do you control quality?
A: 1. We conduct rigorous inspections of our raw materials to guarantee top-notch quality before initiating production.
2. Our installation process is diligently monitored at every phase to ensure precision.
3. Each machine undergoes a minimum of 5 continuous hours of 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 ensures we meet your precise 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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