Introducing the groundbreaking Low-Pressure Compressor by Sanzhi (Henan) Compressor Co., Ltd.! This exceptional Two-Stage Compression Permanent Magnet Variable Frequency Drive Screw Air Compressor has been meticulously crafted to redefine industrial standards. Available in a wide array of power options, including 15KW, 22KW, 30KW, 37KW, 45KW, 55KW, 75KW, 90KW, 110KW, 132KW, 160KW, 185KW, 200KW, and an impressive 250KW, this adaptable powerhouse ensures unparalleled efficiency and unwavering reliability. Revolutionize your operations with this cutting-edge solution, expertly tailored to cater to the diverse and challenging demands of today's ever-evolving industries.
Internal Structure Frontside
Internal Structure Backside
Working Principle
In an optimal air compression environment, the energy needed for single-stage pressure transfer equals the combined energy for multi-stage compression. However, real-world factors such as coupling power losses, bearing friction, and fluid viscosity cooling lead to increased operational power requirements. By reducing the compression ratio per stage, these inefficiencies are minimized. Consequently, the overall power consumption for multi-stage compression is lower than that for single-stage compression.
Our state-of-the-art two-stage screw air compressor is an epitome of engineering brilliance, featuring an exceptionally sophisticated twin-stage rotary screw mechanism. This revolutionary system employs an innovative design where an active screw drives a passive screw via a robust external power transmission setup at each stage. The first stage incorporates a low-pressure screw group, while the second utilizes a high-pressure screw group. Each precision-engineered screw is meticulously encased within a sealing air film. During operation, the gas undergoes a tri-phase process - suction, pressurization, and exhaust - ensuring unparalleled compression efficiency and reliability.
First Stage Compression: In the initial stage of our two-stage screw air compressor, the gas is efficiently compressed utilizing 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 compresses it before it is seamlessly transferred to the second stage. This process ensures optimal compression efficiency right from the start.
Second Stage Compression: In the second stage screw group, the gas is further compressed within a more confined screw space, achieving higher temperatures and pressures. This intensive process culminates as the exhaust valve opens, releasing the high-pressure gases from the system and completing the compression cycle with unmatched effectiveness.
Natural air is initially drawn through the meticulously designed air filter into the first compression stage, where it merges with a small quantity of lubricating oil. This expertly mixed blend is compressed to an intermediate pressure. Subsequently, the gas moves into a strategically positioned cooling channel, where it interacts with a significant amount of oil mist, dramatically lowering its temperature. The cooled, compressed gas then advances to the second-stage rotor for its final compression to the ultimate exhaust pressure. The fully compressed gas then gracefully exits the system through the exhaust valve, marking the completion of the compression cycle with precision.
1) High efficiency of PM motor:Step into the future with our state-of-the-art permanent magnet motor, offering unmatched efficiency. Its expanded constant torque and weak magnetic ranges provide a 20-30% efficiency gain over traditional motors, maintaining peak performance even outside the rated frequency for optimal functionality.
2) Two-stage compression unique air end:Discover our groundbreaking two-stage compression screw machine, featuring an ingeniously crafted air end. By integrating the first and second-stage compression rotors into one casing and driving them directly with gears, each rotor achieves perfect linear speed, maximizing compression efficiency beyond compare.
3) Integrated frequency converter: Equipped with China's leading-frequency system, our air compressor delivers extensive speed regulation and high precision. Easily adjust the frequency according to real-time gas demands, unlocking exceptional energy savings and superior operational efficiency.
4) Reduce internal leakage:Our cutting-edge two-stage compression technology lowers the compression ratio per stage, reducing internal leakage from high to low pressure ends, dramatically boosting volumetric efficiency.
5) Variable frequency start and the soft startof the motor are seamlessly achieved, greatly decreasing the impact on power grid systems and protecting electrical components from potential damage.
6) Reduce energy consumption: Our innovative frequency conversion system functions from 25% to 100%, enhancing the standard 50% to 100% range. It surpasses fixed-speed air compressors with over 30% energy savings and offers an additional 5% efficiency over typical variable frequency compressors, ideal for systems with variable gas demands.
7) No transmission loss: The ingenious design of our embedded integrated shaft direct connection structure between the permanent magnet motor and compressor eliminates couplings and transmission parts, achieving an extraordinary 100% transmission efficiency in a compact form.
8) Air cooling method: Our ultra-efficient air cooling method ensures superior cooling performance, reducing compressed air temperature significantly. This near-isothermal process minimizes pressure loss between stages, decreasing the compression ratio and enhancing overall operational efficiency.
9)Smart Touch Controller: Introducing our cutting-edge built-in intelligence: a smart touch controller that requires minimal manual input. Its high-precision color electronic screen offers clear graphical views, maintenance updates, fault alarms, and safety shutdowns for seamless operation.
10)Special Type Intake Valve:Engineered for precision, the automatically controlled opening ensures smooth fuel injection and lubricating oil flow, while ultra-low oil circuit loss amplifies overall efficiency. The normally open solenoid valve closes during emergencies to prevent oil injection, safeguarding system integrity.
11)Excellent Air Filter:Our superior air filter offers outstanding purification capabilities, ensuring a pristine air system with three-stage filtration for enhanced air quality. It effectively removes steam and dust, aligning with strict emission standards.
12)High-Quality Soundproof Cotton:Our expertly designed noise reduction housing, combined with premium soundproof cotton, reduces operational vibration and significantly cuts noise levels, creating a quieter, more efficient workspace.
13) Motor maintenance-free:Our cutting-edge permanent magnet motor, devoid of internal bearings, eradicates the necessity for motor bearing maintenance and replacement, lowering long-term upkeep costs and boosting reliability.
14) Noise reduction:Discover a new era of serenity with the advanced two-stage compression technology meticulously developed by Sanzhi (Henan) Compressor Co., Ltd. This revolutionary system masterfully lowers the compression ratio, resulting in a phenomenal decrease in operational noise, especially noticeable during unloading phases. Indulge in a quieter, more efficient working environment that significantly amplifies your productivity with the Sanzhi Efficient Twin-Stage 90kw Robust Industrial Screw Air Compressor, designed for demanding applications. Enhance your industrial operations with Sanzhi's unparalleled engineering excellence.
15) Effortless Maintenance and Service:Our cutting-edge two-stage compressor unit, expertly engineered by Sanzhi (Henan) Compressor Co., Ltd., maintains the familiar structure and systems akin to a single-stage compressor, aside from the sophisticated screw air end. This guarantees that maintenance and service tasks remain uncomplicated and user-friendly, offering you seamless upkeep and consistent peak performance. Experience hassle-free maintenance and extraordinary results with the Sanzhi Efficient Twin-Stage 90kw Robust Industrial Screw Air Compressor, built for demanding tasks. Rely on Sanzhi for straightforward maintenance and outstanding outcomes.
| 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. Exceptional Competitive Pricing
Experience unmatched value with Sanzhi (Henan) Compressor Co., Ltd. By directly sourcing from us, you unlock the benefits of factory-direct pricing. This strategic advantage ensures your market position as highly competitive, truly second to none.
2. Seamless Direct Transactions
Revel in unparalleled cost-efficiency and reliability through our seamless direct transactions. Delivered straight from the factory floor to your hands, our products guarantee substantial savings and service you can trust.
3. Tailored OEM & ODM Services
Harness our cutting-edge production and management prowess for bespoke OEM and ODM services. We meticulously customize our offerings to fulfill your precise specifications, ensuring that your unique requirements are impeccably met.
4. Bespoke Customized Solutions
We excel in managing non-standard and export orders, expertly tailoring solutions to your specific voltage, power, and pressure needs. Present us with your customization desires, and we will craft solutions that align perfectly with your specifications.
5. Acceptance of Small Orders
Begin your journey with us through a small trial order. Witness firsthand the outstanding quality of our offerings and confirm your satisfaction before deciding to expand your investment.
6. Swift and Reliable Delivery
Trust in our commitment to swift, reliable delivery services. We prioritize the timely dispatch of your premium products, ensuring your operations remain seamlessly uninterrupted.
7. Extensive Comprehensive Authorization
Enhance your distribution capabilities with our robust authorization certifications. Market and sell SANZHI brand products with confidence, supported by comprehensive certification that bolsters your sales potential.
Sanzhi (Henan) Compressor Co., Ltd stands as a beacon of excellence in the realm of screw air compressors and screw vacuum pumps. With over ten years of unmatched industry prowess, we offer a diverse and all-encompassing range of products. From normal and low-pressure screw air compressors to cutting-edge permanent magnet frequency conversion and two-stage compression models, our offerings are designed for versatility and high performance. We specialize in screw air compressors tailored for laser cutting and provide mobile options in single-tank and double-tank variants, powered by both electric and diesel engines. Additionally, our advanced screw vacuum pumps are engineered to meet even the most challenging industrial requirements.
Our cutting-edge production facility is equipped with sophisticated multi-air compressor assembly lines, ensuring superior efficiency and precision in manufacturing. With a dedicated workforce of over 50 skilled professionals, we consistently enhance our management systems, such as ERP, to significantly cut down lead times and ensure the rapid delivery of top-tier products. Our unwavering commitment to innovation keeps us at the forefront of the industry, setting new standards in compressor technology.
Our meticulously crafted management systems are devoted to maintaining the pinnacle of quality standards. Proudly holding the ISO9001 certification, we adhere to stringent quality control protocols. Every machine undergoes thorough inspections throughout all stages-from material selection and production checks to pre-delivery evaluations-ensuring unparalleled product reliability and excellence. Our steadfast dedication to quality provides you with unparalleled assurance and peace of mind.
Our exemplary customer service begins with an expert pre-sales team ready to provide tailored guidance on selecting the ideal air equipment for a variety of facilities. We offer extensive customization options, such as appearance and configuration adjustments, and craft bespoke products to fulfill specific dealer requirements through our OEM services. Our professional sales and service team is always on standby, ensuring immediate and efficient post-sales support to meet your needs with unmatched attention and care. Experience the superior customer service with Sanzhi.
At Sanzhi (Henan) Compressor Co., Ltd, we are unwavering in our commitment to delivering superior, reliable, and stable products. Our dedication to forging long-term client relationships is reflected in our promise of efficient delivery, high-quality machinery, and competitive pricing. We ensure you receive the optimal compressed air solution tailored to your requirements, offering remarkable value and performance.
Nestled in the scenic Xinzheng City, Henan Province, China, our factory is conveniently located a mere 30 kilometers from Xinzheng International Airport, approximately an hour's drive away. We warmly extend an invitation to visit our facility and witness firsthand the outstanding offerings we provide. Discover the distinctive Sanzhi experience in person!
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a distinguished manufacturer specializing in screw air compressors with over a decade of industry expertise. Our extensive experience distinguishes us in the field.
Q2. How do you control quality?
A: 1. Our raw materials are subjected to rigorous inspection to ensure only the highest quality materials are utilized in production.
2. The precise installation process is carefully monitored at every stage of assembly to maintain our exacting standards.
3. Each machine is put through a rigorous testing protocol, running for a minimum of 5 continuous hours before dispatch, to guarantee optimal performance and unwavering reliability.
Q3. What information must I provide to get the suitable machine?
1. Your required air delivery capacity (Unit: CFM or m³/Min) to match your operational needs.
2. The desired working pressure (Unit: PSI, Bar or Mpa) essential for your applications.
3. The voltage and frequency specifications of your country of residence (V/Hz) to ensure compatibility.
4. Any additional accessories needed, such as air tanks, filters, or air dryers, to complete your system.
Share this information with us, and we will custom-tailor a perfect solution to suit your needs! Our expertise ensures we deliver precisely what you require.
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. proudly presents a diverse spectrum of voltage configurations, perfectly crafted to satisfy international needs. Our offerings include 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, and 440v/60hz/3p. We excel in delivering bespoke solutions, customized to align with your exact electrical demands.
Q6. How long is the delivery time?
A: For our standard voltage models, we ensure dispatch within a swift 15 working days upon order confirmation. In case of non-standard voltage needs, our dedicated sales team is at your service to provide a precise delivery timeline that suits your requirements.
Q7. What's the payment term?
A: We offer customer-friendly payment terms: 30% T/T in advance, 40% T/T before dispatch, and the balance 30% T/T upon receipt of the B/L copy. We accept payments in both USD and RMB, ensuring convenience for our global clientele.
Q8. How about your warranty?
A: Sanzhi stands by its products with a robust warranty: one year for the complete unit and two years specifically for the screw air compressor, with consumable spare parts being the only exclusions.
Q9. What about the maintenance?
A: Essential initial maintenance should be conducted after 500 operating hours. Subsequent maintenance is recommended between 2000-3000 hours, tailored to fit your unique working environment for optimal performance.
Q10. Can machines be run in high-temperature environment?
A: Certainly! Our machines are engineered for optimal performance even under extreme temperature conditions, maintaining efficiency in environments ranging from -20° to 45° (-4ºF to 113ºF).
Q11. Do you offer OEM service?
A: Indeed, we excel in providing comprehensive OEM and ODM services. Our expert design team is fully prepared to actualize your custom orders, delivering tailor-made solutions that flawlessly meet your specifications.
Q12. How long could your air compressor be used?
A: Engineered for durability, our air compressors promise an impressive lifespan, typically surpassing 10 years of reliable, stable performance.
Q13. Will you provide some spare parts for the machines?
A: Certainly, we offer an extensive selection of premium spare parts, guaranteeing that your machines operate with unwavering efficiency, ensuring sustained peak performance over the long haul.
Q14. How about your after-sales service?
A: Our superior after-sales service includes comprehensive online installation and commissioning support. Should you require, we can dispatch experienced engineers for meticulous training and hands-on installation guidance.
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