Discover the revolutionary Low-Pressure Compressor from Sanzhi (Henan) Compressor Co., Ltd.! This state-of-the-art Two-Stage Compression Permanent Magnet VFD Screw Air Compressor is crafted to redefine industrial excellence. With an impressive array of power selections including 15KW, 22KW, 30KW, 37KW, 45KW, 55KW, 75KW, 90KW, 110KW, 132KW, 160KW, 185KW, 200KW, and 250KW, this adaptable powerhouse delivers unparalleled efficiency and reliability. Elevate your operations with this cutting-edge solution, precisely engineered to address the diverse and demanding challenges of today's dynamic industries. Embrace the future of industrial technology with a product that sets the benchmark for performance and innovation.
Internal Structure Frontside
Internal Structure Backside
Working Principle
In an ideal air compression milieu, the energy required for a single-stage pressure transfer matches the combined energy for multi-stage compression. Yet, real-world dynamics such as power losses in coupling, bearing friction, and fluid viscosity cooling augment the necessary operation power. By deftly diminishing the compression ratio per stage, these inefficiencies are significantly curbed. Consequently, the total power consumption for multi-stage compression remains lower than that of single-stage compression.
Our cutting-edge two-stage screw air compressor showcases an exceptionally refined twin-stage rotary screw architecture. This groundbreaking innovation features a dynamic screw in each stage that propels a passive screw through a formidable external power transmission system. The first stage is distinguished by a low-pressure screw assembly, while the second stage is characterized by a high-pressure screw assembly. Each screw is meticulously encased within a sealed air film. Throughout its operation, the gas undergoes a meticulously executed tri-phase progression-suction, pressurization, and exhaust-ensuring unmatched compression efficiency.
First Stage Compression: At the commencement of our two-stage screw air compressor's operation, gas is adeptly compressed using a low-pressure screw assembly. Initially attracted into the compression chamber via the suction valve, the high-speed rotation of the screw rotor deftly compresses the gas before it is seamlessly transitioned to the second stage.
Second Stage Compression: Within the second stage screw assembly, the gas undergoes further compression in an even more restricted screw space, achieving elevated temperatures and pressures. The process completes as the exhaust valve opens, liberating the high-pressure gases from the system and concluding the compression cycle.
Natural air is initially drawn through the air filter into the first compression stage, where it amalgamates with a slight amount of lubricating oil. This fusion is compressed to an intermediate pressure. Following this phase, the gas navigates through a cooling channel, where it encounters a substantial quantity of oil mist, drastically reducing its temperature. The cooled, compressed gas then proceeds to the second-stage rotor for its final compression to the ultimate exhaust pressure. The fully compressed gas then exits the system through the exhaust valve, concluding the compression cycle.
1) High efficiency of PM motor:Experience unparalleled efficiency with our advanced permanent magnet motor. Its constant torque range and weak magnetic range are significantly wider, delivering an efficiency boost of 20-30% over conventional motors. Even when operating away from the rated frequency, the motor sustains its high efficiency, ensuring optimal performance at all times.
2) Two-stage compression unique air end:Our revolutionary two-stage compression screw machine is equipped with a uniquely designed air end, combining the first and second-stage compression rotors within a single casing and directly driving them by gears. This allows each rotor to achieve optimal linear speed, thereby maximizing compression efficiency.
3) Integrated frequency converter: Outfitted with China's premier frequency system, the air compressor offers an extensive range of speed regulation and high precision. Users can adjust the frequency based on actual gas demand, resulting in remarkable energy savings and elevated operational efficiency.
4) Reduce internal leakage:Utilizing two-stage compression technology reduces the compression ratio for each stage, thereby minimizing internal leakage from the high-pressure end to the low-pressure end while significantly enhancing volumetric efficiency.
5) Variable frequency start and the soft startof the motor are achieved, significantly reducing the impact on power grid equipment and preventing damage to electrical components.
6) Reduce energy consumption: Our frequency conversion system operates from 25% to 100%, a substantial improvement over the ordinary 50% to 100% range. Compared to fixed-speed air compressors, energy savings can exceed 30%. Even against standard variable frequency compressors, it offers around 5% more energy efficiency, with greater savings for systems with fluctuating gas demands.
7) No transmission loss: The permanent magnet motor and compressor utilize an embedded integrated shaft direct connection structure, making it more compact. With no couplings or other transmission parts, the transmission efficiency reaches an unparalleled 100%.
8) Air cooling method: Our highly efficient air cooling method delivers exceptional cooling performance, significantly reducing the temperature of compressed air. This near-isothermal compression also minimizes pressure loss between stages, reducing the compression ratio and enhancing overall efficiency.
9)Smart Touch Controller:Our state-of-the-art built-in intelligence requires minimal manual operation. Featuring a high-precision color electronic screen, it provides clear graphical displays, maintenance information, fault alarms, and safety shutdown alerts for seamless operation.
10)Special Type Intake Valve:Automatically controlled opening ensures smooth engine fuel injection and lubricating oil circulation.
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 top-tier air filter boasts exceptional air purification capabilities, ensuring a clean air system with three-stage filtration for superior air quality. It efficiently removes steam and dust, meeting stringent emission standards.
12)High-Quality Soundproof Cotton:Our compact noise reduction housing, coupled with high-quality soundproof cotton, minimizes operational vibration and significantly enhances noise reduction, ensuring a quieter, more efficient workspace.
13) Motor maintenance-free:Our permanent magnet motor, free of internal bearings, eliminates the need for motor bearing maintenance and replacement, reducing long-term maintenance costs and enhancing reliability.
14) Noise reduction:Immerse yourself in the serenity of state-of-the-art two-stage compression technology, meticulously crafted by Sanzhi (Henan) Compressor Co., Ltd. This avant-garde system ingeniously minimizes the compression ratio, leading to a remarkable decrease in operational noise, especially noticeable during unloading phases. Delight in a quieter, more efficient workspace, and surge your productivity levels with Sanzhi's Powerful Two-Stage High Capacity Screw Air Compressor designed for heavy-duty tasks. Elevate your industrial endeavors with the unmatched engineering prowess of Sanzhi.
15) Effortless Maintenance and Service:The cutting-edge two-stage compressor unit from Sanzhi (Henan) Compressor Co., Ltd. retains the well-known framework and systems of a single-stage compressor, with the sole exception of the advanced screw air end. This thoughtful design ensures that maintenance and service are seamless and intuitive. Enjoy trouble-free upkeep and maintain consistent, optimal performance with Sanzhi's Powerful Two-Stage High Capacity Screw Air Compressor, built for heavy-duty applications. Place your confidence in Sanzhi for straightforward maintenance and outstanding performance.
| 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 with Sanzhi (Henan) Compressor Co., Ltd. Through direct sourcing, you gain access to unbeatable factory-direct pricing, ensuring that your market competitiveness is exceptionally robust and advantageous.
2. Direct Transactions
Harness the benefits of cost-efficiency and trustworthiness with our direct transaction model. Receive products directly from the factory, ensuring maximum savings and reliable service every time.
3. OEM & ODM Services
Leverage our advanced production and management capabilities to access tailor-made OEM and ODM services. We customize solutions to meet your precise specifications, ensuring your unique requirements are flawlessly executed.
4. Customized Solutions
We specialize in non-standard and export orders, adeptly meeting unique voltage, power, and pressure demands. Communicate your specific customization requests, and we'll deliver solutions that perfectly match your vision.
5. Small Order Acceptance
Engage with us through a small trial order and witness the superior quality of our offerings. Confirm your satisfaction before committing to larger investments, ensuring a risk-free partnership.
6. Rapid Delivery
Enjoy the confidence of our fast and efficient delivery services. We prioritize quick delivery of high-quality products to keep your operations moving smoothly without interruption.
7. Comprehensive Authorization
Enhance your distribution capabilities with our extensive authorization certifications. Market and sell SANZHI brand products with assurance, backed by complete and rigorous certification.
Sanzhi (Henan) Compressor Co., Ltd stands out as an esteemed leader in the manufacture of cutting-edge screw air compressors and innovative screw vacuum pumps. With over ten years of unrivaled experience in the industry, we offer a diverse and comprehensive range of products. Our offerings include normal pressure and low-pressure screw air compressors, high-performance permanent magnet frequency conversion screw air compressors, advanced two-stage compression screw air compressors, and specialized screw air compressors for laser cutting applications. Additionally, we provide versatile single-tank and double-tank mobile screw air compressors, alongside electric and diesel variants, as well as state-of-the-art screw vacuum pumps.
Our advanced production facility is equipped with sophisticated multi-air compressor assembly lines that ensure exceptional efficiency and precision. With the support of a dedicated team of over 50 highly skilled professionals, we consistently enhance our management systems, such as the ERP platform, to significantly reduce lead times and ensure the expeditious delivery of top-tier quality products.
Our meticulously designed management systems are crafted to uphold the highest quality standards. With proud certification under the ISO9001 quality management system, we adhere to rigorous quality control protocols. Each machine undergoes comprehensive inspections at various stages-from material checks and production evaluations to pre-delivery assessments-guaranteeing unmatched reliability and product excellence.
Our exemplary customer service begins with a knowledgeable pre-sales team offering expert guidance for selecting the ideal air equipment tailored to diverse facility needs. We offer extensive customization options in appearance and configuration, creating bespoke products to meet specific dealer demands through our OEM services. Our professional sales and service team is always ready to provide prompt and efficient post-sales support, ensuring your requirements are swiftly and effectively addressed.
At Sanzhi (Henan) Compressor Co., Ltd, we are steadfast in our commitment to delivering superior, reliable, and stable products. We are dedicated to forging long-lasting partnerships with our clients and promise efficient delivery, top-quality machinery, and competitive pricing, ensuring you receive the optimal compressed air solution for your needs.
Nestled in the scenic Xinzheng City, Henan Province, China, our factory is conveniently located just 30 kilometers from Xinzheng International Airport, approximately an hour's drive away. We warmly invite you to visit our facility and witness our exceptional offerings firsthand!
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a distinguished manufacturer, expertly specializing in screw air compressors and proudly boasting over a decade of industry expertise.
Q2. How do you control quality?
A: 1. Our raw materials are subject to rigorous inspection to ensure the highest quality standards are met.
2. The meticulous installation process is closely and stringently monitored.
3. Each machine undergoes a minimum of 5 continuous hours of testing before dispatch to ensure 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.
Share this information with us, and we will tailor a perfect solution for you!
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: Sanzhi (Henan) Compressor Co., Ltd. presents a comprehensive spectrum of voltage options meticulously designed to meet global requirements. Our offerings include 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, and 440v/60hz/3p, ensuring versatility and adaptability. Moreover, we excel in delivering customized solutions that seamlessly cater to your unique electrical demands.
Q6. How long is the delivery time?
A: We are committed to timely delivery, with standard voltage units being dispatched within a mere 15 working days post order confirmation. For non-standard voltage specifications, please liaise with our attentive sales team to receive precise and personalized delivery timelines.
Q7. What's the payment term?
A: Our payment terms are thoughtfully crafted for your convenience. We require 30% T/T in advance, followed by 40% T/T prior to shipment, and the final 30% T/T upon receiving the B/L copy. We are pleased to accept payments in both USD and RMB currencies, offering flexibility and ease.
Q8. How about your warranty?
A: Sanzhi proudly offers a comprehensive warranty, embodying confidence in our products. Enjoy a one-year warranty for the entire machine and an extended two-year warranty for the screw air compressor, excluding consumable spare parts, ensuring peace of mind and reliability.
Q9. What about the maintenance?
A: Proper maintenance is paramount to optimal performance. The initial service is essential and should occur after 500 operating hours. Thereafter, maintenance intervals are recommended between 2000-3000 hours, tailored to the specific working conditions.
Q10. Can machines be run in high-temperature environment?
A: Unquestionably! Our machines are meticulously engineered to deliver exceptional performance, even in extreme temperature conditions. They operate efficiently within a broad range of -20° to 45° (-4ºF to 113ºF), ensuring reliability and durability.
Q11. Do you offer OEM service?
A: Indeed, we excel in providing both OEM and ODM services. Our skilled design team is adept at transforming your bespoke orders into reality, offering tailor-made solutions that impeccably meet your specifications and expectations.
Q12. How long could your air compressor be used?
A: Our air compressors are designed with longevity in mind, boasting an impressive lifespan that typically exceeds 10 years of dependable and efficient service, underscoring our commitment to quality and durability.
Q13. Will you provide some spare parts for the machines?
A: Certainly, we provide an extensive array of high-quality spare parts to ensure your machines operate flawlessly and sustain optimal performance over an extended duration.
Q14. How about your after-sales service?
A: We pride ourselves on delivering exceptional after-sales support, encompassing detailed online installation and commissioning guidance. Additionally, we offer the option of deploying skilled engineers for hands-on training and precise installation assistance as required, ensuring a seamless and satisfying experience.
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