Introducing the groundbreaking Low-Pressure Compressor, masterfully designed by Sanzhi (Henan) Compressor Co., Ltd.! Experience the pinnacle of industrial innovation with the Two-Stage Compression Permanent Magnet Variable Frequency Drive Screw Air Compressor. This marvel of engineering is poised to set new standards of excellence, offering a versatile range of power options to suit all your professional needs: 15KW, 22KW, 30KW, 37KW, 45KW, 55KW, 75KW, 90KW, 110KW, 132KW, 160KW, 185KW, 200KW, and 250KW. Ensuring unmatched efficiency and reliability, this state-of-the-art solution is meticulously crafted to cater to the diverse and rigorous demands of contemporary industries. Elevate your operations to new heights with this revolutionary compressor, designed to transform and enhance your industrial capabilities.
Internal Structure Frontside
Internal Structure Backside
Working Principle
In the dynamic world of air compression, the quintessential objective is for the energy expended in single-stage pressure transmission to closely mirror the aggregate energy of multi-stage compression. Yet, real-world factors such as coupling power losses, the friction of bearings, and the cooling effects due to the viscosity of fluids tend to elevate operational energy demands. By cleverly minimizing the compression ratio at each stage, these inefficiencies are significantly trimmed. Hence, total energy consumption in multi-stage compression is rendered more efficient and lower compared to single-stage compression.
Discover our cutting-edge two-stage screw air compressor, featuring a pioneering twin-stage rotary screw mechanism. This groundbreaking design integrates an active screw in each stage, vigorously energizing a passive screw through a robust external power transmission system. The initial stage encompasses a low-pressure screw group, succeeded by the second stage, which integrates a high-pressure screw group. Each screw is meticulously enveloped within a sealing air film. During the operation, the gas undergoes a comprehensive tri-phase sequence-suction, pressurization, and exhaust-culminating in peerless compression efficiency.
First Stage Compression: At the commencement of compression in our two-stage screw air compressor, gas is adeptly compressed employing a low-pressure screw group. Initially, the gas is drawn into the compression chamber via the suction valve, where the high-speed rotation of the screw rotor efficiently compresses the gas, setting the stage for a smooth transition to the second stage.
Second Stage Compression: In the second stage screw group, the gas endures intensified compression in a more restricted screw space, culminating in elevated temperatures and pressures. This intricate process concludes with the exhaust valve opening, facilitating the release of high-pressure gases from the system, thus completing the compression cycle.
Natural air is initially drawn through the air filter into the primary compression stage, where it amalgamates with a moderate quantity of lubricating oil. This mixture is compressed to an intermediary pressure and subsequently conveyed into a cooling channel. Here, the gas mingles with a dense oil mist, which substantially diminishes its temperature. The cooled, compressed gas then advances to the second-stage rotor for its ultimate compression to the final exhaust pressure. The fully compressed gas exits the system through the exhaust valve, signaling the completion of the compression cycle.
1) High efficiency of PM motor:Discover an unprecedented level of efficiency with our state-of-the-art permanent magnet motor, designed to redefine performance standards. Boasting an expansive constant torque and magnetic range, this motor eclipses conventional alternatives by an extraordinary 20-30%. Whether operating within or beyond its rated frequency, this motor is engineered to maintain exceptional efficiency, consistently delivering optimal performance and energy savings.
2) Two-stage compression unique air end:Step into the future with our revolutionary two-stage compression screw machine, complete with a masterfully engineered air end. This innovative design integrates the first and second-stage compression rotors within a single, gear-driven casing, ensuring each rotor achieves the ideal linear speed for maximum compression efficiency. Experience compression excellence like never before, with performance benchmarks reaching new heights.
3) Integrated frequency converter: Equipped with China's leading frequency system, our air compressor sets new standards for precision and efficiency. The expansive speed regulation range allows for exact frequency adjustments aligned with real gas requirements, culminating in substantial energy savings and unrivalled operational effectiveness.
4) Reduce internal leakage:By implementing our advanced two-stage compression technology, we dramatically reduce the compression ratio per stage. This state-of-the-art innovation significantly curtails internal leakage from high to low-pressure ends and elevates volumetric efficiency to unparalleled levels, redefining industry standards.
5) Variable frequency start and the soft startof the motor are ingeniously integrated, substantially reducing the stress on power grid equipment and safeguarding electrical components from potential damage, ensuring long-term durability and reliability.
6) Reduce energy consumption: Our advanced dynamic frequency conversion technology spans from 25% to 100%, a significant leap from the standard 50% to 100% range. This innovation delivers energy savings exceeding 30% when compared with fixed-speed air compressors and an additional 5% efficiency over standard variable frequency models. Systems with variable gas demands benefit from even greater savings.
7) No transmission loss: Our ingenious design links the permanent magnet motor and compressor via an integrated shaft direct connection, eliminating the need for couplings or additional transmission parts. This results in an unparalleled transmission efficiency of 100%, providing a compact and efficient solution.
8) Air cooling method: Experience superior cooling with our highly efficient air cooling methodology, which dramatically reduces the temperature of compressed air. Near-isothermal compression minimizes pressure loss between stages, decreases the compression ratio, and enhances overall system efficiency, setting a new benchmark in cooling technology.
9)Smart Touch Controller: Revolutionize your operational experience with our cutting-edge smart touch controller. Its high-precision color electronic screen requires minimal manual input, offering clear graphical displays of maintenance data, fault alerts, and safety shutdowns, ensuring seamless and efficient management of your system.
10)Special Type Intake Valve:The valve's automatic opening mechanism facilitates flawless engine fuel injection and lubricating oil circulation, enhancing overall system performance.
The ultra-low oil circuit loss further amplifies efficiency, making it an indispensable component of our superior design.
In critical situations, the normally open solenoid valve automatically shuts to prevent oil injection, ensuring maximum system safety and reliability.
11)Excellent Air Filter:Our top-of-the-line air filter guarantees unmatched air purity with its comprehensive three-stage filtration system. It effectively removes steam and dust, meeting the most rigorous emission standards for superior air quality and system integrity.
12)High-Quality Soundproof Cotton:Our advanced noise reduction technology, featuring premium soundproof cotton, significantly decreases operational vibrations and noise. This ensures a quieter and more efficient workspace, elevating the user experience and productivity.
13) Motor maintenance-free:Our advanced permanent magnet motor, meticulously designed without internal bearings, completely eradicates the need for motor bearing maintenance and replacement. This innovation not only slashes long-term maintenance costs but also significantly enhances the reliability and longevity of your equipment, ensuring consistent peak performance.
14) Noise Reduction:Immerse yourself in the epitome of tranquility provided by our cutting-edge two-stage compression technology. This innovative system skillfully lowers the compression ratio, dramatically reducing operational noise levels, especially during unloading phases. Experience a quieter, more efficient work environment, effortlessly boosting your productivity with the exemplary Professional Industrial Screw Compressor, a distinguished creation by Sanzhi.
15) Effortless Maintenance and Service:Our trailblazing two-stage compressor unit cleverly maintains the familiar structure and systems of a single-stage compressor. By simply removing the screw air end, we ensure maintenance and service are straightforward and easily accessible to everyone. Enjoy seamless upkeep and benefit from a consistently high-performing compressor with Sanzhi's Professional Industrial Screw Compressor.
| 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
Partner with us to experience extraordinary value. By choosing Sanzhi (Henan) Compressor Co., Ltd., you tap into unrivaled factory-direct pricing, positioning you ahead in a fiercely competitive marketplace. Experience unbeatable prices that drive your business growth and enhance your profitability.
2. Direct Transactions
Benefit from optimal cost-efficiency and the security of direct transactions. Our products come straight from the factory to you, ensuring maximum savings and dependability. Enjoy seamless transactions that eliminate middleman costs and boost your operational efficiency.
3. OEM & ODM Services
Harness the power of our vast production and management expertise. We offer customized OEM and ODM services that align with your exact specifications, fulfilling your distinct needs with precision. Let our tailored solutions become the backbone of your business innovations.
4. Customized Solutions
Specializing in non-standard and export orders, we adjust to specific voltage, power, and pressure requirements. Contact us with your customization requests, and we'll provide solutions that meet your demands perfectly. Experience tailored engineering that meets your unique operational needs.
5. Small Order Acceptance
Start your partnership with a small trial order to directly experience the exceptional quality of our offerings, ensuring your satisfaction before expanding your orders. Witness the superior craftsmanship firsthand before committing to larger projects.
6. Rapid Delivery
Relish in the assurance that comes with our fast, efficient delivery services. We guarantee your premium products arrive on time, ensuring the seamless continuation of your operations. Trust in our swift logistics to keep your business momentum unbroken.
7. Comprehensive Authorization
Boost your distribution prowess with our complete authorization certificates. Confidently market and sell SANZHI brand products, supported by all-encompassing certification. Empower your business expansion with full regulatory backing and industry recognition.
Sanzhi (Henan) Compressor Co., Ltd stands as a beacon of excellence in the manufacture of advanced screw air compressors and screw vacuum pumps. With an illustrious history spanning over ten years, our expertise shines through a diverse and all-encompassing product range. From versatile normal and low-pressure screw air compressors to innovative permanent magnet frequency conversion devices, we excel in delivering cutting-edge solutions. Our product lineup also includes two-stage compression and laser-cutting specific screw air compressors, alongside mobile options tailored for both electric and diesel needs. Furthermore, our groundbreaking screw vacuum pumps are designed to meet the demands of modern applications.
Our cutting-edge production facility proudly features advanced multi-air compressor assembly lines, delivering exceptional efficiency and precision. Supported by a dedicated team of over 50 highly skilled professionals, we continually enhance our management systems, such as ERP, to significantly reduce lead times and ensure the swift delivery of superior quality products.
Our meticulously developed management systems are unwavering in their commitment to the highest standards of quality. With the prestigious ISO9001 certification under our belt, we adhere to rigorous quality control protocols. Each machine undergoes comprehensive inspections at every stage, from material evaluations to production assessments and pre-delivery checks, ensuring unparalleled product reliability and excellence.
Our exemplary customer service begins with a pre-sales team offering adept guidance to help you choose the perfect air equipment tailored to diverse facility needs. We provide extensive customization options, encompassing appearance and configuration, crafting bespoke products to meet specific dealer requirements through our exceptional OEM services. Our professional sales and service team remains at your disposal, ensuring immediate and efficient post-sales support to address all your needs promptly.
At Sanzhi (Henan) Compressor Co., Ltd, our unwavering commitment is to deliver superior, reliable, and stable products. In our pursuit of fostering long-term client relationships, we guarantee efficient delivery, top-grade machinery, and competitive pricing, ensuring you receive the quintessential compressed air solution tailored for your requirements.
Nestled in the picturesque Xinzheng City, Henan Province, China, our strategically located factory is merely 30 kilometers from Xinzheng International Airport, approximately an hour's drive away. We cordially invite you to visit our facility and immerse yourself in our exceptional offerings firsthand!
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a renowned manufacturer specializing in screw air compressors, with a proud legacy of over a decade of industry experience.
Q2. How do you control quality?
A: 1. We conduct rigorous inspections of our raw materials to ensure top-notch quality.
2. Our meticulous installation process is carefully monitored for precision.
3. Each machine undergoes at least 5 hours of continuous testing pre-dispatch, ensuring 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.
Provide us with this information, and we will custom-tailor the 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: At Sanzhi, we are delighted to offer an extensive range of voltage options that are meticulously crafted to cater to your bespoke requirements. Our selection includes 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, and 440v/60hz/3p. Effortlessly tailor your equipment to seamlessly align with your distinct applications, providing unmatched customization and versatility.
Q6. How long is the delivery time?
A: Revel in the swiftness of our delivery process for standard voltage units, shipped out within an efficient 15 working days following order confirmation. For personalized configurations, our devoted sales team stands ready to craft custom-tailored delivery solutions just for you.
Q7. What's the payment term?
A: Our payment terms are designed for your convenience, offering flexibility with an initial 30% T/T upfront, succeeded by 40% T/T prior to shipment, and concluding with the remaining 30% T/T once the B/L copy is received. Transactions can be conducted in both USD and RMB to suit your preferences.
Q8. How about your warranty?
A: Avail yourself of our comprehensive warranty program, which provides one year of coverage for the entire machine, alongside an extended two-year warranty for the screw air compressor, excluding consumable spare parts. This ensures peace of mind and dependable performance over time.
Q9. What about the maintenance?
A: Initiate maintenance after the first 500 operational hours and continue to maintain exceptional performance with servicing every 2000-3000 hours thereafter. Adjust your maintenance schedule according to actual working conditions for utmost efficiency and longevity.
Q10. Can machines be run in high-temperature environment?
A: Absolutely, our machines are engineered to thrive in high-temperature environments, performing flawlessly within a wide temperature range from -20° to 45° (-4ºF to 113ºF), guaranteeing consistent reliability even under challenging conditions.
Q11. Do you offer OEM service?
A: Indeed, our expertise in OEM & ODM services, backed by our adept design team, enables us to transform your unique visions into reality. We enthusiastically welcome bespoke orders, offering outstanding design capabilities to fulfill your custom needs.
Q12. How long could your air compressor be used?
A: Our air compressors are expertly engineered for durability and longevity, with a typical service life exceeding a decade. This ensures sustained performance and extraordinary value, reinforcing our commitment to quality.
Q13. Will you provide some spare parts for the machines?
A: Absolutely, we offer a thorough assortment of premium spare parts, guaranteeing your machinery operates with seamless efficiency and enduring reliability, thereby enhancing longevity and maintaining peak performance.
Q14. How about your after-sales service?
A: Discover excellence in our after-sales service through comprehensive online installation and commissioning support. Additionally, benefit from our experienced engineers' onsite training and precise installation expertise, ensuring optimal performance whenever necessary.
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