Introducing the revolutionary Low-Pressure Compressor, an innovation by the prestigious Sanzhi (Henan) Compressor Co., Ltd.! This state-of-the-art Two-Stage Compression Permanent Magnet Variable Frequency Drive Screw Air Compressor is a true masterpiece of modern engineering, poised to redefine industrial standards for performance and reliability. Offering an extensive range of power options - including 15KW, 22KW, 30KW, 37KW, 45KW, 55KW, 75KW, 90KW, 110KW, 132KW, 160KW, 185KW, 200KW, and 250KW - this adaptable marvel ensures unmatched efficiency and trustworthy operation. Propel your enterprise into the future with this cutting-edge technological advancement, meticulously crafted to meet and exceed the diverse and demanding requirements of today's most progressive industries.
Internal Structure Frontside
Internal Structure Backside
Working Principle
In an ideal air compression scenario, the energy required for single-stage pressure transmission equates to the combined energy demands of multi-stage compression. In practice, however, several factors contribute to higher operational power requirements, such as coupling power losses, bearing friction, and the cooling effects of fluid viscosity. By minimizing the compression ratio at each stage, these inefficiencies can be significantly reduced. As a result, the total power consumption for multi-stage compression is often lower than that of single-stage compression.
Experience the pinnacle of air compression technology with our groundbreaking two-stage screw air compressor. Crafted with precision, this advanced system features a state-of-the-art twin-stage rotary screw mechanism. The active screw in each stage effectively drives a passive screw through a robust external power transmission, ensuring superior performance. The journey begins with a low-pressure screw group in the first stage, flawlessly transitioning to a high-pressure screw group in the second stage. Each screw is meticulously designed and shielded by a protective sealing air film. Enter a new era of efficiency as the gas undergoes a synchronized tri-phase process: suction, pressurization, and exhaust. Together, these phases deliver unparalleled compression performance.
First Stage Compression: Harness the power of efficiency in the initial stage of our two-stage screw air compressor. In this phase, gas is expertly compressed using a low-pressure screw group. The process initiates as gas is adeptly drawn into the compression chamber via the suction valve. Witness the transformation as the screw rotor's rapid rotation effectively compresses the gas, seamlessly preparing it for transition to the second stage.
Second Stage Compression: Enhance your compression experience with the second stage screw group, where the gas is subjected to further compression within a strategically confined screw space. This stage achieves heightened temperatures and pressures, culminating in a potent release through the exhaust valve. The high-pressure gases escape triumphantly, completing the seamless compression cycle with precision and power.
Embark on the journey of natural air as it is meticulously drawn through the air filter into the first compression stage. Here, it blends with a precise amount of lubricating oil, creating an enriched mixture that is compressed to an intermediate pressure. The journey then continues into a cooling channel, where the gas engages with an abundant oil mist, substantially reducing its temperature. As the cooled, compressed gas advances to the second-stage rotor, it undergoes final compression to reach ultimate exhaust pressure. This sophisticated process culminates with the fully compressed gas exiting the system through the exhaust valve, completing the cycle with remarkable efficiency.
1) High efficiency of PM motor:Experience superior energy performance with our cutting-edge permanent magnet motor. This dynamic engine provides an expansive torque and weak magnetic range, achieving an astounding 20-30% efficiency increase over conventional motors. Regardless of the operating frequencies, the motor sustains optimal efficiency, ensuring exceptional performance in all scenarios.
2) Two-stage compression unique air end:Unlock the future of air compression with our pioneering two-stage compression screw technology. Our ingeniously crafted air end combines both first and second-stage compression rotors within a single casing, each driven by precision gears to achieve their perfect speed. This design redefines compression efficiency to its zenith.
3) Integrated frequency converter: Leverage the prowess of China's premier frequency system within our air compressor, delivering extensive speed modulation with unparalleled precision. Fine-tune the frequency to your precise gas demand, realizing remarkable energy savings and operational superiority.
4) Reduce internal leakage:Harnessing groundbreaking two-stage compression technology, we lower each stage's compression ratio, drastically reducing internal leakage from high to low-pressure zones and significantly enhancing volumetric efficiency.
5) Variable frequency start and the soft startof the motor are flawlessly implemented, greatly reducing impacts on power grid systems while protecting electrical components from possible damage.
6) Reduce energy consumption: Our advanced frequency conversion technology operates seamlessly from 25% to 100%, vastly exceeding the usual 50% to 100% range. Achieve over 30% energy savings compared to fixed-speed compressors and around 5% more than standard variable frequency models, particularly in varying demand situations.
7) No transmission loss: Our groundbreaking integrated shaft direct connection between the permanent magnet motor and compressor promotes a compact design. Absence of couplings or transmission parts ensures an unmatched 100% transmission efficiency.
8) Air cooling method: Embrace our ultra-efficient air cooling system, offering superior cooling that significantly lowers compressed air temperature. Near-isothermal compression minimizes pressure loss between stages, reducing compression ratios and enhancing overall efficiency.
9)Smart Touch Controller: Our sophisticated built-in intelligence reduces manual intervention. Featuring a high-definition color electronic display, it offers intuitive graphical interfaces, maintenance updates, fault alarms, and safety shutdown notifications for seamless operations.
10)Special Type Intake Valve:Its automated operation ensures smooth engine fuel and oil flow. Minimal oil circuit loss significantly enhances efficiency. During emergencies, the normally open solenoid valve automatically closes to prevent oil injection, guaranteeing safe operation.
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 superior air filter offers outstanding purification, maintaining an immaculate air system through advanced three-stage filtration for unparalleled air quality. It efficiently eliminates steam and dust, complying with the strictest emission standards.
12)High-Quality Soundproof Cotton:Our meticulously designed noise reduction housing coupled with premium soundproof cotton minimizes vibrations and substantially lowers noise levels, fostering a tranquil and productive work atmosphere.
13) Motor maintenance-free:Our maintenance-free permanent magnet motor, devoid of internal bearings, eliminates the necessity for bearing upkeep or replacement, significantly reducing long-term maintenance costs while enhancing reliability.
14) Noise reduction:Step into a world of unparalleled tranquility with Sanzhi's cutting-edge two-stage compression technology. This state-of-the-art system expertly minimizes the compression ratio, ensuring a significant reduction in operational noise, especially during unloading. Immerse yourself in a quieter and more productive workspace, enhancing your efficiency with the Professional Industrial Screw Compressor from Sanzhi, a pioneer in acoustic comfort and performance excellence.
15) Effortless Maintenance and Service:Our innovative two-stage compressor unit superbly maintains the familiar design and systems of a traditional single-stage compressor. By simply eliminating the screw air end, we ensure that maintenance and service are straightforward and user-friendly for everyone. Experience seamless, hassle-free upkeep and consistently maintain peak performance with Sanzhi's Professional Industrial Screw Compressor, designed for simplicity and dependability in every detail.
| 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 by choosing Sanzhi (Henan) Compressor Co., Ltd. Gain exclusive access to our factory-direct prices that empower you to thrive in the competitive market landscape, ensuring you always lead with cost-effectiveness.
2. Direct Transactions
Benefit from unmatched cost-efficiency and peace of mind through our direct transaction model. We supply all products directly from the factory to you, guaranteeing maximum savings and exceptional reliability.
3. OEM & ODM Services
Leverage our robust production and management capabilities. We provide tailored OEM and ODM services, meticulously crafted to match your specifications and to exceed your unique requirements, delivering unmatched customization.
4. Customized Solutions
We excel in managing non-standard and export orders, adapting to your specific voltage, power, and pressure needs. Present us with your custom requirements, and we will deliver solutions precisely aligned with your expectations.
5. Small Order Acceptance
Begin your partnership with a small trial order to personally experience the exceptional quality of our products. Secure your satisfaction before confidently scaling up your orders.
6. Rapid Delivery
Experience peace of mind with our efficient, timely delivery service. We ensure your premium products arrive swiftly and punctually, maintaining the seamless and uninterrupted flow of your operations.
7. Comprehensive Authorization
Boost your distribution capabilities with our extensive authorization certifications. Market and sell SANZHI brand products with confidence, fortified by our comprehensive certification support.
Nestled in the heart of innovation, Sanzhi (Henan) Compressor Co., Ltd is a shining beacon of excellence in the manufacturing world, specializing in the creation of advanced screw air compressors and vacuum pumps. With over a decade of unmatched expertise, our company offers a diverse array of products, including both standard and low-pressure screw air compressors, along with permanent magnet frequency conversion models. Our sophisticated two-stage compression units are complemented by compressors tailored specifically for laser cutting applications, alongside versatile single-tank and double-tank mobile screw options. Additionally, we provide both electric and diesel-driven mobile screw compressors, as well as pioneering screw vacuum pumps.
Our cutting-edge production facility is home to state-of-the-art multi-air compressor assembly lines, ensuring remarkable efficiency and precision in manufacturing. With a team of over 50 highly skilled employees, we consistently refine our management systems, such as ERP, to minimize lead times and ensure the swift delivery of top-tier products.
Our meticulously crafted management systems are dedicated to maintaining the pinnacle of quality standards. Proudly backed by ISO9001 certification, we adhere to stringent quality control procedures. Each unit undergoes thorough inspections at every stage, from material checks and production monitoring to pre-delivery evaluations, ensuring unparalleled reliability and excellence.
Our exceptional customer service journey begins with an expert pre-sales team offering valuable insights to help select the ideal air equipment, tailored to various facilities. We provide comprehensive customization options, covering both appearance and configuration, and deliver bespoke products that meet distinct dealer requirements through our OEM services. Our professional sales and service team is always ready to deliver swift and effective post-sales support, ensuring your every need is promptly addressed.
At Sanzhi (Henan) Compressor Co., Ltd, our unwavering dedication to providing superior, reliable, and stable products is evident. We are devoted to cultivating enduring partnerships with our clients, ensuring efficient delivery, high-quality machinery, and competitive pricing that offer you the perfect compressed air solution tailored to your needs.
Situated in the scenic Xinzheng City, Henan Province, China, our factory boasts a prime location just 30 kilometers from Xinzheng International Airport, roughly an hour's drive away. We warmly invite you to visit and witness our exceptional offerings firsthand!
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a renowned manufacturer specializing in screw air compressors, proudly equipped with over a decade of industry expertise.
Q2. How do you control quality?
A: 1. Our raw materials undergo rigorous and precise inspections to meet the highest quality standards.
2. The installation process is closely monitored to guarantee precision and perfection.
3. Each machine is subjected to a rigorous minimum of 5 continuous hours of testing before dispatch, ensuring peak 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: At Sanzhi, we're dedicated to offering exceptional versatility, presenting a wide array of voltage options such as 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, and 440v/60hz/3p. Furthermore, our bespoke customization services are designed to seamlessly match your unique specifications, ensuring an ideal fit for your needs.
Q6. How long is the delivery time?
A: Our standard voltage models are ready for rapid dispatch within an efficient 15 working days following order confirmation. For those requiring non-standard specifications, we encourage you to reach out to our devoted sales team to receive precise timelines and personalized expert assistance tailored to your requirements.
Q7. What's the payment term?
A: Our adaptable payment terms are structured for your convenience, with an initial 30% T/T in advance, followed by 40% T/T before shipment, and a concluding 30% T/T upon presentation of the B/L copy. Transactions can be smoothly conducted in both USD and RMB, affording you flexibility and ease.
Q8. How about your warranty?
A: With our comprehensive warranty, you gain peace of mind: a full year of coverage for the entire machine, supplemented by an additional two-year warranty for the screw air compressor specifically. Please be aware that consumable spare parts are excluded from this warranty provision.
Q9. What about the maintenance?
A: To maintain peak performance, we recommend an initial maintenance check at 500 hours of operation. Subsequently, regular maintenance should be scheduled every 2000-3000 hours, with adjustments made according to the specific conditions of your working environment.
Q10. Can machines be run in high-temperature environment?
A: Absolutely, our machines are ingeniously designed to excel even in high-temperature environments. They exhibit a robust operational temperature range, performing reliably from a brisk -20° to a warm 45° (-4ºF to 113ºF), ensuring high-quality performance regardless of external conditions.
Q11. Do you offer OEM service?
A: Indeed, we proudly offer both OEM and ODM services, supported by our skilled and creative design team. We warmly invite your custom orders and are eager to transform your distinctive visions into reality, delivering tailored solutions that meet your exact specifications.
Q12. How long could your air compressor be used?
A: Engineered for remarkable durability and longevity, our air compressors are designed to provide an impressive service life, typically exceeding a decade of dependable operation, ensuring consistent performance and reliability over time.
Q13. Will you provide some spare parts for the machines?
A: Certainly, we provide a comprehensive selection of high-quality spare parts, meticulously designed to support the seamless, efficient operation of your machinery. This ensures extended life and maintains peak performance, reinforcing the longevity and efficiency of your equipment.
Q14. How about your after-sales service?
A: We are committed to delivering exceptional after-sales service, encompassing comprehensive online support for installation and commissioning. If required, we can dispatch skilled engineers to offer hands-on training and precise installation guidance, ensuring a smooth and successful integration.
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