Introducing the groundbreaking Low-Pressure Compressor by Sanzhi (Henan) Compressor Co., Ltd.! This innovative Two-Stage Compression Permanent Magnet Variable Frequency Drive Screw Air Compressor has been meticulously engineered to set new standards of industrial excellence. Boldly stepping into the future of performance, this compressor is available in an extensive range of power options, including 15KW, 22KW, 30KW, 37KW, 45KW, 55KW, 75KW, 90KW, 110KW, 132KW, 160KW, 185KW, 200KW, and 250KW. This versatile powerhouse promises unmatched efficiency and reliability, making it an indispensable asset for any industry. Transform your operations with this state-of-the-art solution, expertly designed to meet the diverse and demanding needs of today's dynamic industries with unparalleled precision and performance.
Internal Structure Frontside
Internal Structure Backside
Working Principle
In an optimal air compression setting, the energy required for a single-stage pressure transfer matches the cumulative energy needed for multi-stage compression. Nonetheless, real-world variables like coupling power losses, bearing friction, and the viscosity of cooling fluids lead to increased operational power demands. By strategically reducing the compression ratio per stage, these inefficiencies are significantly minimized. As a result, the overall power consumption for multi-stage compression turns out to be lower than that for single-stage compression.
Our cutting-edge two-stage screw air compressor is engineered with an exceptionally advanced twin-stage rotary screw mechanism. This game-changing system integrates an active screw in each stage, which drives a passive screw through a sturdy external power transmission setup. The first stage incorporates a low-pressure screw group, while the second stage is equipped with a high-pressure screw group. Each screw is precisely encased within a sealing air film, ensuring protection and efficiency. Throughout operation, the gas undergoes a comprehensive tri-phase process including suction, pressurization, and exhaust, guaranteeing unmatched compression efficiency.
First Stage Compression: In the initial phase of our two-stage screw air compressor, the gas is efficiently compressed using a low-pressure screw group. At the outset, the gas is drawn into the compression chamber through the suction valve, where the high-velocity rotation of the screw rotor compresses it efficiently before it is seamlessly forwarded to the second stage.
Second Stage Compression: In the second stage screw group, the gas is further compressed within a more restricted screw space, reaching elevated temperatures and pressures. This process culminates as the exhaust valve opens, releasing the high-pressure gases from the system, thereby completing the compression cycle with finesse.
Natural air is initially drawn through the air filter into the first compression stage, where it merges with a precise amount of lubricating oil. This mixture is compressed to an intermediate pressure. The gas then advances into a cooling channel, where it interacts with a substantial amount of oil mist, significantly reducing its temperature. The cooled and compressed gas then proceeds to the second-stage rotor for its final compression to the ultimate exhaust pressure. The fully compressed gas exits the system through the exhaust valve, thereby completing the comprehensive compression cycle.
1) High efficiency of PM motor:Unleash exceptional efficiency with our cutting-edge permanent magnet motor, designed to outperform conventional motors by a remarkable 20-30%. Its expansive constant torque and weak magnetic range ensure sustained high efficiency, even when deviating from the rated frequency, guaranteeing peak performance throughout.
2) Two-stage compression unique air end:Our innovative two-stage compression screw machine features an air end with a pioneering design, ingeniously integrating first and second-stage compression rotors within a unified casing, driven directly by precision gears. Each rotor attains optimal linear speed, thereby elevating compression efficiency to new heights.
3) Integrated frequency converter: Equipped with China's top-tier frequency system, this air compressor offers vast speed regulation capabilities and precision control. Tailor the frequency to meet actual gas demands and enjoy significant energy savings and enhanced operational efficacy.
4) Reduce internal leakage:Harness the power of two-stage compression technology to lower the compression ratio for each stage, effectively curtailing internal leakage from high to low-pressure ends, while dramatically boosting volumetric efficiency.
5) Variable frequency start and the soft startMinimize impact on power grid equipment with variable frequency and soft start technology, safeguarding electrical components from potential damage.
6) Reduce energy consumption: Our frequency conversion system, operating from 25% to 100%, outshines the typical 50% to 100% range. Experience over 30% in energy savings versus fixed-speed compressors and about 5% more efficiency than standard variable frequency models, offering substantial savings for systems with variable gas demands.
7) No transmission loss: With a seamless embedded integrated shaft direct connection structure, our permanent magnet motor and compressor achieve an unmatched 100% transmission efficiency, eliminating the need for couplings or additional transmission components.
8) Air cooling method: Our advanced air cooling method excels in reducing compressed air temperature, delivering near-isothermal compression and minimizing pressure loss between stages. This technology optimizes the compression ratio and boosts overall efficiency.
9)Smart Touch Controller: Experience effortless operation with our state-of-the-art smart touch controller, featuring a high-definition color electronic screen. It offers intuitive graphical displays, maintenance alerts, fault warnings, and safety shutdown notifications, ensuring seamless performance.
10)Special Type Intake Valve:The precision-controlled intake valve guarantees smooth engine fuel injection and optimal lubricating oil flow, while ultra-low oil circuit loss enhances total efficiency. In emergencies, the normally open solenoid valve closes automatically to avert oil injection, maintaining system integrity.
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 premium air filter sets the standard for air purification, employing three-stage filtration to deliver superior air quality by efficiently removing steam and dust, and adhering to rigorous emission standards.
12)High-Quality Soundproof Cotton:The compact noise reduction housing, paired with premium soundproof cotton, drastically cuts down operational vibration and noise, creating a quieter, more productive working environment.
13) Motor maintenance-free:Our maintenance-free permanent magnet motor, devoid of internal bearings, eradicates the need for bearing upkeep and replacement, significantly reducing long-term maintenance expenses while boosting reliability.
14) Noise reduction:Experience unparalleled tranquility with the cutting-edge two-stage compression technology, meticulously engineered by Sanzhi (Henan) Compressor Co., Ltd. This revolutionary system expertly reduces the compression ratio, leading to a substantial decrease in operational noise, especially during unloading phases. Delight in a quieter, more efficient workspace that remarkably enhances your productivity, courtesy of the Sanzhi Efficient Twin-Stage 90kw Robust Industrial Screw Air Compressor for Heavy Tasks. Transform your industrial operations by choosing Sanzhi's superior and innovative engineering.
15) Effortless Maintenance and Service:Our pioneering two-stage compressor unit, developed by Sanzhi (Henan) Compressor Co., Ltd., maintains the familiar design and systems seen in single-stage compressors, with the notable enhancement of the screw air end. This thoughtful design ensures maintenance and servicing are straightforward and user-friendly. Experience hassle-free upkeep and constant, superior performance with the Sanzhi Efficient Twin-Stage 90kw Robust Industrial Screw Air Compressor for Heavy Tasks. Rely on Sanzhi for maintenance made easy and unparalleled results.
| 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. By partnering with us, you unlock factory-direct pricing, ensuring your market position is unmatched and offers unbeatable competitiveness.
2. Direct Transactions
Benefit from streamlined cost-efficiency and unwavering reliability through our direct transactions. Our products are delivered straight from the factory, ensuring exceptional savings and steadfast service.
3. OEM & ODM Services
Leverage our state-of-the-art production and management facilities to access customized OEM and ODM services. We meticulously craft our offerings to meet your precise specifications, ensuring every unique requirement is flawlessly fulfilled.
4. Customized Solutions
Excel in non-standard and export orders by customizing voltage, power, and pressure specifications to your exact needs. Share your customization desires, and we'll provide solutions that seamlessly align with your unique demands.
5. Small Order Acceptance
Initiate your collaboration with a small trial order and experience the exceptional quality of our products firsthand. Verify your complete satisfaction before scaling your investment.
6. Rapid Delivery
Rest easy with our swift and efficient delivery services. We prioritize the rapid dispatch of your premium products, ensuring your operational continuity is never compromised.
7. Comprehensive Authorization
Enhance your distribution capabilities with our comprehensive authorization certificates. Market and sell SANZHI brand products with confidence, supported by robust certification.
Sanzhi (Henan) Compressor Co., Ltd stands proudly as a leading name in manufacturing, offering cutting-edge technology in screw air compressors and vacuum pumps, tailored to meet the industry's highest standards. With over a decade of unsurpassed expertise, Sanzhi showcases a versatile and comprehensive product array. This includes both normal and low-pressure screw air compressors, state-of-the-art permanent magnet frequency conversion models, and advanced two-stage compression systems. Our specialty extends to laser cutting screw compressors, and we also provide mobile options with single-tank and double-tank configurations. Moreover, our portfolio includes electric and diesel mobile screw air compressors and innovative screw vacuum pumps, all engineered to cater to the most demanding industrial applications.
Within our ultra-modern production facility, a range of sophisticated multi-air compressor assembly lines operate with unparalleled efficiency and precision. Our skilled workforce, over 50 strong, continually pushes the boundaries of excellence. Through our advanced management systems, such as ERP, we minimize lead times and ensure the rapid delivery of high-caliber products. Driven by a relentless quest for innovation, Sanzhi remains at the cutting edge of the industry, setting benchmarks for quality and performance.
Our meticulously designed management systems epitomize our commitment to the highest quality standards. Accredited with the prestigious ISO9001 certification, we adhere to strict quality control measures. Every machine is subject to thorough inspections at multiple stages, including material checks, production assessments, and pre-delivery evaluations, guaranteeing unmatched reliability and excellence. Our unwavering dedication to quality ensures that you receive products that consistently exceed expectations, offering peace of mind and trust.
Exemplary customer service is the cornerstone of Sanzhi. Our pre-sales team provides expert guidance, ensuring you select the perfect air equipment tailored to your unique facility requirements. We offer a wealth of customization options, covering appearance and configuration, and through our OEM services, we create bespoke products that align with specific dealer requirements. Our professional sales and service team is always ready to provide prompt post-sales support, ensuring that your needs are addressed swiftly and efficiently. Experience unmatched customer care and attention with Sanzhi.
At Sanzhi (Henan) Compressor Co., Ltd, our unwavering commitment to excellence drives us to deliver products known for their superior reliability and stability. We focus on building lasting relationships with our clients, promising efficient delivery timelines, premium quality machinery, and competitive pricing. We ensure that you receive the most suitable compressed air solution for your needs, offering exceptional value and performance that sets industry standards.
Nestled in the scenic beauty of Xinzheng City, Henan Province, China, our factory enjoys a strategic location just 30 kilometers from Xinzheng International Airport, a convenient hour's drive away. We warmly invite you to visit our facility and witness firsthand the exceptional quality of our offerings. Experience the Sanzhi difference and discover why we are a leader in our field.
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a renowned manufacturer with a specialization in screw air compressors, proudly possessing over a decade of industry experience. Our profound expertise distinguishes us in the sector.
Q2. How do you control quality?
A: 1. Every batch of raw materials undergoes stringent quality inspections to ensure only the best materials enter production.
2. Our meticulous installation process is carefully monitored at every stage, maintaining the highest quality standards.
3. Before dispatch, each machine is rigorously tested for a minimum of 5 continuous hours, ensuring exceptional performance and reliability.
Q3. What information must I provide to get the suitable machine?
1. Kindly provide the required air delivery capacity (expressed in CFM or m³/Min).
2. State the desired working pressure (measured in PSI, Bar, or Mpa).
3. Mention the voltage and frequency specifications applicable in your region (V/Hz).
4. Specify any additional accessories needed, such as an air tank, filters, or air dryers.
Share this detailed information with us, and we will craft the perfect solution tailored to your needs, ensuring precision and satisfaction beyond your expectations.
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 versatile selection of voltage options tailored to fulfill diverse global requirements. Our offerings include 380v/50hz/3p, 400v/50hz/3p, 415v/50hz/3p, 220v/60hz/3p, and 440v/60hz/3p. Additionally, we excel in creating bespoke solutions that precisely match your unique electrical specifications.
Q6. How long is the delivery time?
A: For our standard voltage models, we ensure a swift dispatch within 15 working days after order confirmation. For non-standard voltages, our dedicated sales team is on hand to provide a tailored delivery timeline to suit your needs.
Q7. What's the payment term?
A: We offer flexible and customer-friendly payment terms: an initial 30% T/T deposit, followed by 40% T/T before shipment, and the remaining 30% T/T upon receiving the B/L copy. Payments are conveniently accepted in both USD and RMB.
Q8. How about your warranty?
A: Sanzhi proudly supports its products with a robust warranty: one year coverage for the entire machine and an extended two-year warranty for the screw air compressor, excluding consumable spare parts.
Q9. What about the maintenance?
A: To ensure optimal performance, initial maintenance is crucial after 500 operational hours. Subsequent maintenance should occur between 2000-3000 hours, with adjustments based on your specific working conditions.
Q10. Can machines be run in high-temperature environment?
A: Absolutely! Our machines are engineered for superior performance even in challenging temperature conditions, efficiently operating within a spectrum of -20° to 45° (-4ºF to 113ºF).
Q11. Do you offer OEM service?
A: Certainly, we specialize in OEM and ODM services. Our experienced design team is proficient in executing custom orders, providing bespoke solutions that seamlessly align with your specifications.
Q12. How long could your air compressor be used?
A: Engineered for durability, our air compressors boast an impressive lifespan, typically surpassing 10 years of reliable and continuous service.
Q13. Will you provide some spare parts for the machines?
A: Certainly, we supply an extensive array of premium spare parts, ensuring your machines maintain optimal functionality and sustained high-level performance over time.
Q14. How about your after-sales service?
A: We deliver outstanding after-sales service, including comprehensive online installation and commissioning support. Should it be required, we can also provide expert engineers for in-person training and meticulous installation assistance.
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