Introducing the groundbreaking Low-Pressure Compressor, an extraordinary and cutting-edge innovation exclusively from Sanzhi (Henan) Compressor Co., Ltd.! Embark on an unparalleled journey of industrial excellence with this unrivaled Two-Stage Compression Permanent Magnet Variable Frequency Drive Screw Air Compressor, a true marvel of modern engineering. This remarkable machine offers an exceptional selection of power options, ranging from 15KW, 22KW, 30KW, 37KW, 45KW, 55KW, 75KW, 90KW, 110KW, 132KW, 160KW, 185KW, 200KW, and reaching up to an impressive 250KW. This versatile powerhouse is expertly designed to deliver unmatched efficiency and unwavering reliability in every application. Transform your operations with this state-of-the-art innovation, meticulously engineered to surpass the diverse and demanding needs of today's industries. Immerse yourself in the pinnacle of air compression technology with this high-capacity powerhouse, perfectly suited for heavy-duty applications. Featuring an advanced two-stage air cooling system, this compressor guarantees optimal performance and durability, making it the premier choice for businesses determined to streamline operations and boost productivity. Discover Sanzhi's pioneering innovation, where superior quality seamlessly blends with exceptional performance to redefine industrial expectations.
Internal Structure Frontside
Internal Structure Backside
Working Principle
Within a meticulously crafted air compression environment, single-stage and multi-stage compression often require similar energy inputs. Yet, real-world applications introduce variables like coupling power losses, bearing friction, and fluid viscosity cooling effects, elevating energy consumption. By ingeniously optimizing the compression ratio at each stage, these inefficiencies are dramatically reduced. Consequently, the power demands of multi-stage systems become substantially lower than their single-stage counterparts, ensuring a more efficient and cost-effective operation.
Unveiling our revolutionary two-stage screw air compressor, featuring an intricately designed twin-stage rotary screw architecture. This innovative system houses an active screw at each stage, driving a passive screw via a robust external power transmission setup. The first phase incorporates a low-pressure screw assembly, followed by a high-pressure screw configuration. Each screw is enveloped in a precision-engineered sealing air film. Throughout its operation, the gas undergoes a seamless three-phase cycle-suction, pressurization, and exhaust-delivering outstanding compression efficiency and elite performance.
First Stage Compression: At the inception of our two-stage screw air compressor's operation, gas is expertly compressed using the low-pressure screw group. Initially, the gas is drawn into the compression chamber via the suction valve, where the rapid rotation of the screw rotor compresses it. This primary compression stage prepares the gas for its seamless transition to the second stage, laying the foundation for enhanced compression.
Second Stage Compression: In this advanced stage, the gas undergoes further compression within a more confined screw space, rising to higher temperatures and pressures. This process culminates as the exhaust valve opens, releasing the high-pressure gases from the system, thereby completing the comprehensive compression cycle with impeccable precision and effectiveness.
Natural air is initially channeled through the air filter into the first compression stage, where it mingles with a minute quantity of lubricating oil. This mixture is compressed to an intermediate pressure level. Subsequently, the gas moves into a cooling channel, interacting with a substantial oil mist, substantially lowering its temperature. The cooled, compressed gas then advances to the second-stage rotor for final compression to the ultimate exhaust pressure. Upon reaching this stage, the fully compressed gas exits the system through the exhaust valve, concluding the compression cycle with remarkable precision and efficiency.
1) High efficiency of PM motor:Immerse yourself in a world of unparalleled energy efficiency with our state-of-the-art permanent magnet motor. It elevates efficiency by a staggering 20-30% over conventional motors, due to its broad constant torque range and dynamic magnetic performance. Even when operating beyond its rated frequency, this motor delivers outstanding efficiency, ensuring top-tier performance at all times.
2) Two-stage compression unique air end:Our revolutionary two-stage compression system is masterfully engineered with a distinctive air end, expertly merging dual compression rotors within a singular casing. The rotors, driven directly by gears, operate at optimal linear velocities, dramatically enhancing compression efficiency and delivering unparalleled reliability.
3) Integrated frequency converter: Featuring the finest frequency system in China, our compressor boasts an extensive speed regulation range with remarkable precision. Users can seamlessly tailor the frequency to align with real-time gas requirements, achieving significant energy savings and exceptional performance.
4) Reduce internal leakage:With our pioneering two-stage compression technology, the compression ratio per stage is reduced, effectively minimizing internal leakage from high to low-pressure zones. This technological leap results in enhanced volumetric efficiency and superb overall compressor performance.
5) Variable frequency start and the soft startUtilizing both variable frequency and soft start features, our motor dramatically reduces the impact on power grid systems, safeguarding electrical components from potential damage while prolonging their lifespan.
6) Reduce energy consumption: Our cutting-edge frequency conversion system operates efficiently from 25% to 100%, far exceeding the typical 50% to 100% range. It delivers more than 30% energy savings compared to fixed-speed compressors, with an added 5% efficiency gain over standard variable frequency systems, making it ideal for fluctuating gas demand scenarios.
7) No transmission loss: The optimized design, with a direct connection between the permanent magnet motor and compressor, eliminates transmission components. This ensures perfect 100% transmission efficiency, providing peak performance without compromise.
8) Air cooling method: Our exceptionally effective air cooling system provides superior cooling capabilities, dramatically lowering the temperature of compressed air. This method encourages near-isothermal compression, reduces pressure loss, optimizes the compression ratio, and significantly boosts overall efficiency.
9)Smart Touch Controller: Our sophisticated smart controller is designed with integrated intelligence, minimizing the need for manual intervention. Featuring a high-resolution color electronic display, it offers intuitive graphical interfaces, maintenance alerts, fault notifications, and safety shutdowns for continuous, trouble-free operation.
10)Special Type Intake Valve:The automatic opening ensures smooth engine fuel injection and oil circulation, greatly enhancing system efficiency.
With exceptionally low oil circuit loss, our system experiences a marked increase in efficiency.
The normally open solenoid valve ensures a secure seal during emergency shutdowns, preventing oil injection and safeguarding maximum system safety.
11)Excellent Air Filter:Our unparalleled air filter, equipped with a robust three-stage filtration system, provides superior air purification, guaranteeing pristine air quality. It efficiently removes steam and dust, surpassing the highest emission standards for environmentally-friendly operations.
12)High-Quality Soundproof Cotton:Our innovative design, featuring noise reduction housing and premium soundproof cotton, significantly diminishes operational vibrations and noise, ensuring a quieter and more efficient working environment.
13) Motor maintenance-free:Welcome to the future of industrial efficiency with our innovative maintenance-free permanent magnet motor design. By completely removing internal bearings, we have eliminated the need for tedious bearing maintenance and replacement altogether. This brilliant breakthrough in technology doesn't just cut down your long-term maintenance costs remarkably but also boosts the reliability of our compressor systems. With this enhancement, you can be assured of peak performance for all your operations, sustained over longer periods without interruption.
14) Noise reduction:Experience the tranquility that our revolutionary two-stage compression technology brings, a testament to the engineering excellence at Sanzhi (Henan) Compressor Co., Ltd. This state-of-the-art system has been ingeniously crafted to perfect the compression ratio, leading to a substantial reduction in operational noise, particularly noticeable during unloading sessions. Elevate your workspace environment to a realm of peace and efficiency, enhancing your productivity with the Sanzhi Efficient Robust Two-Stage Permanent Magnet VFD Screw Compressor. Place your trust in Sanzhi's unmatched technical expertise to transform and uplift your industrial processes.
15) Effortless Maintenance and Unmatched Service:Introducing the groundbreaking two-stage compressor unit from Sanzhi (Henan) Compressor Co., Ltd., which ingeniously retains all the familiar architecture and systems of the single-stage compressor you already know. The only distinguishing innovation lies in the screw air end, making maintenance and service straightforward and user-friendly. Revel in hassle-free upkeep with consistently stellar performance, all thanks to the Sanzhi Efficient Robust Two-Stage Permanent Magnet VFD Screw Compressor. Depend on Sanzhi for maintenance that is as seamless as it is efficient, ensuring outstanding results every time.
| 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 the gateway to an unparalleled world of value with Sanzhi (Henan) Compressor Co., Ltd. By choosing us as your partner, you gain access to exclusive, factory-direct pricing that provides you with a significant competitive edge in your industry. Elevate your market position with our strategic pricing advantage, meticulously crafted to boost your profitability and success.
2. Direct Transactions
Enhance your purchasing journey with our cost-effective and trustworthy direct transaction model. Our streamlined logistics pipeline ensures that products are delivered directly from our factory to your location, guaranteeing substantial cost savings and an unwaveringly reliable supply chain.
3. OEM & ODM Services
Leverage our cutting-edge production and management capabilities to access superior OEM and ODM services. Each offering is designed to meet your specific requirements, ensuring that all custom requests are executed with precision and excellence.
4. Customized Solutions
Excel in handling non-standard and export orders with our tailored solutions. We address varying voltage, power, and pressure requirements, expertly crafting responses to align seamlessly with your unique specifications. Share your distinct needs, and we'll develop solutions that meet your exact expectations effortlessly.
5. Small Order Acceptance
Begin your journey with us through a small trial order and witness the exceptional quality of our products firsthand. Gain complete satisfaction before scaling up to larger orders, providing you with unmatched peace of mind and confidence in your choice.
6. Rapid Delivery
Experience peace of mind with our quick and dependable delivery services. We prioritize the swift arrival of our high-quality products, ensuring your operations run smoothly and efficiently without interruption.
7. Comprehensive Authorization
Augment your distribution capabilities with our robust authorization certifications. Market and distribute SANZHI brand products with complete confidence, strengthened by our comprehensive and thorough certification process that supports your success.
Sanzhi (Henan) Compressor Co., Ltd is a prestigious pioneer in the realm of cutting-edge screw air compressors and vacuum pumps. With over a decade of unassailable industry experience, we proudly present an innovative array of products. Our extensive range encompasses both standard and low-pressure screw air compressors, highly efficient permanent magnet frequency conversion screw air compressors, and the sophisticated two-stage compression screw air compressors. We address specialized demands with our laser cutting screw air compressors, in addition to versatile single-tank and double-tank mobile screw air compressors. Our electric and diesel mobile screw air compressors are meticulously crafted for superior performance. Moreover, our state-of-the-art screw vacuum pumps are designed to meet the most stringent industrial standards.
Our ultra-modern production facility boasts sophisticated multi-air compressor assembly lines, ensuring superb efficiency and precision in every product. Driven by a dedicated team of over 50 highly skilled experts, we are committed to optimizing our management systems, such as ERP, to drastically reduce lead times and ensure the swift delivery of premium products. Our unwavering pursuit of innovation places us at the vanguard of the industry, establishing new standards of excellence.
Our meticulously developed management systems are crafted to maintain the highest quality benchmarks. With the esteemed ISO9001 quality management system certification, we enforce stringent quality control procedures. Each machine is subjected to exhaustive inspections throughout various stages, including material selection, production checks, and pre-delivery assessments, ensuring unmatched product reliability and excellence. Our steadfast commitment to quality provides you with absolute assurance of superior performance.
Experience our exceptional customer service, beginning with our pre-sales team providing expert guidance to select the perfect air equipment for a variety of facilities. We offer comprehensive customization options, including design and configuration modifications, and deliver bespoke solutions to fulfill specific dealer requirements through our OEM services. Our professional sales and support team is always ready to provide prompt and effective post-sales assistance, ensuring your needs are met swiftly and accurately. Enjoy unparalleled customer care with Sanzhi.
At Sanzhi (Henan) Compressor Co., Ltd, we are committed to delivering products that exemplify superiority, reliability, and stability. Dedicated to nurturing enduring partnerships with our clients, we guarantee timely delivery, world-class machinery, and competitive pricing. Our objective is to provide the optimal compressed air solution tailored to your requirements, delivering unmatched value, performance, and satisfaction.
Nestled in the picturesque Xinzheng City, Henan Province, China, our factory is conveniently 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 exceptional offerings firsthand! Come and discover the distinctive Sanzhi experience in person.
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a highly regarded manufacturer specializing in screw air compressors, with over a decade of deep-rooted industry expertise. Our extensive experience distinctly sets us apart in the market, showcasing our exceptional capabilities.
Q2. How do you control quality?
A: 1. We conduct thorough inspections of our raw materials to ensure exceptional quality before commencing production.
2. Our installation process is meticulously monitored at every phase to ensure precision.
3. Each machine undergoes a minimum of 5 continuous hours of rigorous 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 guarantees that we meet your exact needs with precision and excellence.
Q4. What is the general unit conversion?
1Bar = 0.1Mpa = 14.5PSI
1m³/min = 35.32 cfm. This precise and impressive conversion highlights the vast capacity of our compressors, designed to meet the extensive and varied demands of industrial applications with unmatched performance and remarkable efficiency.
1KW = 1.34 HP. This power conversion emphasizes the immense capability of our compressors to deliver substantial and reliable power, ensuring consistent operation even in the most challenging and demanding conditions.
Q5. What is the available voltage air compressor?
A: Sanzhi (Henan) Compressor Co., Ltd. proudly offers a wide-ranging selection of voltage options to expertly meet global standards. Choose from 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, and 440v/60hz/3p. We excel in delivering meticulously tailored solutions, perfectly aligned with your unique electrical specifications, ensuring seamless integration and superior operational performance.
Q6. How long is the delivery time?
A: For standard voltage units, our optimized processes ensure dispatch within an impressive 15 working days following order confirmation. For non-standard voltage requirements, please consult our dedicated sales team for a precise and expertly customized delivery schedule, tailored to your specific needs.
Q7. What's the payment term?
A: Our payment terms are designed 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 accept payments in both USD and RMB, offering flexibility and ease for smooth and seamless transactions.
Q8. How about your warranty?
A: Sanzhi confidently offers a comprehensive 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 unwavering commitment to quality and long-lasting durability.
Q9. What about the maintenance?
A: Initial maintenance is crucial and should occur after 500 operating hours. Thereafter, maintenance intervals are recommended between 2000-3000 hours, tailored to your specific working environment, ensuring sustained optimal performance and longevity of the machine.
Q10. Can machines be run in high-temperature environment?
A: Absolutely! Our machines are ingeniously engineered to perform exceptionally, even in extreme temperatures. They maintain efficient operation within a wide range of -20° to 45° (-4ºF to 113ºF), ensuring steadfast 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 highly skilled at bringing your custom orders to fruition, crafting tailor-made solutions that seamlessly align with your specifications, enhancing brand identity and product differentiation.
Q12. How long could your air compressor be used?
A: Our air compressors are engineered with meticulous attention to detail for exceptional longevity, boasting a remarkable lifespan that typically exceeds 10 years of reliable and efficient service, ensuring continuous productivity and value.
Q13. Will you provide some spare parts for the machines?
A: Absolutely, we offer a comprehensive range of premium spare parts, specifically designed to ensure your machines 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 exceptional after-sales support, offering detailed online installation and commissioning guidance. If needed, 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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