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Welcome to check out this piston refrigeration compressor. It’s ideal for cold storage of vegetables, fruits, meat, and seafood, with power from 3HP to 50HP and cooling capacity increasing with power. What you care about: fast cooling, low noise, high efficiency. We offer reliable after-sales service and fast delivery.
Product Characteristics ← Click to learn more. If you are interested.
As a premier manufacturer and supplier of commercial refrigeration solutions, we present the 30HP Two Stage Refrigeration Compressor. Engineered for heavy-duty cold room applications, this unit delivers exceptional cooling performance for large-scale storage facilities.
Robust 30HP/22kW nominal power for rapid temperature drop.
Advanced two-stage semi-hermetic piston mechanism.
Broad voltage compatibility (380-480V, 50/60Hz) for global facilities.
Ideal for the bulk preservation of meat, seafood, and fresh produce.
Step into a world of uncompromised thermal control with our meticulously engineered 30HP two-stage semi-hermetic piston compressor. Designed specifically for demanding low-temperature environments, this powerhouse hums with a steady, reassuring resonance that signifies relentless efficiency. The heavy-duty cast iron casing feels cool and solid to the touch, housing a precision-machined six-cylinder heart that effortlessly manages massive thermal loads. By integrating a sophisticated forced-lubrication system, the internal components glide seamlessly, minimizing friction and extending the operational lifespan far beyond standard expectations. When you integrate this unit into your facility, you are not just installing a piece of machinery; you are securing the integrity of your perishable inventory. The rapid heat extraction ensures that ice crystals form uniformly, preserving the cellular structure, natural aroma, and fresh taste of your stored seafood, premium meats, and delicate produce. Every curve of the copper piping and every seal on the valve plates reflects a commitment to industrial-grade craftsmanship, ensuring that your cooling operations remain uninterrupted, safeguarding your bottom line against unexpected spoilage and costly downtime.
Compressor Model | Motor Nominal Power HP/kW | Displacement (1450rpm 50Hz/60H | cylinders× diameter× itinerary mm | Suction, Discharge Line mm | Oil Volume L | Power Supply V/Ф/Hz | Electrical Parameters | Crankcase Heater （220V） W | Fuel supply mode | Weight kg | ||
DL Discharge Valve | SL Suction Valve | （A） Max Operating Current | （A） Starting/ Locked Current | |||||||||
6WDS-20.2 | 20/15 | 73.6/36.988.8/44.5 | 6×Ф70/70×55 | Ф35 | Ф42 | 4.75 | 380- 420YY/3/50 440- 480YY/3/60 | 37 | 97/158 | 140 | Forced - lubrication | 220 |
6WDS-25.2 | 25/18.5 | 84.5/42.3101.9/51.1 | 6×Ф75/75×55 | Ф35 | Ф42 | 4.75 | 45 | 116/193 | 140 | 233 | ||
6WDS-30.2 | 30/22 | 101.1/50.5122.0/60.9 | 6×Ф82/82×55 | Ф35 | Ф42 | 4.75 | 53 | 135/220 | 140 | 234 | ||
Achieving optimal temperature control requires machinery that goes beyond basic functionality. Our two-stage compressor is engineered to deliver unparalleled reliability, ensuring your commercial cooling systems operate at peak performance year-round.
Unmatched Thermal Extraction: The dual-stage compression cycle significantly reduces discharge temperatures, allowing for deeper freezing capabilities without overstressing the motor.
Acoustic Optimization: Precision-balanced crankshafts and vibration-dampening mounts result in a remarkably quiet operation, improving the acoustic environment of your mechanical rooms.
Seamless Integration: Designed with standardized connection points, this unit integrates smoothly into existing condensing units, minimizing installation time and labor costs.
Resilient Architecture: Coated with corrosion-resistant industrial finishes, the exterior withstands the harsh, moisture-laden environments typical of large-scale cooling facilities.
When evaluating thermal management equipment, the raw performance metrics dictate the success of your storage operations. This compressor is built to deliver massive cooling power consistently, even under the most strenuous industrial demands.
Formidable Power Output: Driven by a robust 30HP (22kW) motor, this unit provides the sheer force necessary to rapidly draw down temperatures in expansive storage spaces.
High-Volume Displacement: Featuring a maximum displacement of 122.0 m³/h at 60Hz, the six-cylinder configuration ensures a massive volume of refrigerant is circulated continuously, eliminating hot spots.
Global Electrical Compatibility: Engineered to adapt to diverse power grids, it operates flawlessly across 380-420V (50Hz) and 440-480V (60Hz), making it a versatile choice for international facilities.
Optimized Current Draw: With a maximum operating current of 53A, the electrical design balances high-torque starting capabilities (135/220A) with steady-state energy efficiency.
The longevity of any heavy-duty machinery lies in the integrity of its internal components. We source only the highest grade materials and employ rigorous machining tolerances to ensure every compressor outlasts industry standards.
Advanced Forced-Lubrication: Utilizing a dedicated oil pump system, all critical friction points are continuously bathed in lubricant (4.75L capacity), drastically reducing wear on the pistons and cylinders.
Premium Cylinder Construction: The 6 × Φ82/82 × 55 mm cylinders are cast from high-density alloys, providing exceptional resistance to thermal expansion and mechanical fatigue.
Integrated Crankcase Heater: A built-in 140W (220V) heater prevents refrigerant migration and oil foaming during off-cycles, ensuring safe and smooth start-ups in freezing ambient conditions.
Heavy-Duty Valve Plates: Precision-stamped valve reeds respond instantly to pressure changes, maximizing volumetric efficiency while withstanding millions of operational cycles.
Reducing operational overhead is a primary objective for any large-scale facility. This compressor is meticulously designed to maximize the Coefficient of Performance (COP), translating every kilowatt of electricity into maximum cooling capacity.
Two-Stage Efficiency: By dividing the compression process into two steps, the compressor minimizes thermodynamic losses, consuming significantly less power when reaching ultra-low temperatures compared to single-stage models.
Intelligent Thermal Management: The inherently low discharge temperature of the two-stage design prevents oil degradation and maintains high heat transfer rates in your evaporators.
IoT Compatibility: The electrical parameters are fully compatible with modern smart-grid and IoT-enabled control panels, allowing for real-time monitoring and predictive energy management.
Rapid Temperature Recovery: Following door openings or product loading, the high displacement rate ensures the storage environment returns to optimal temperatures swiftly, preventing energy waste.
Versatility is key when outfitting diverse processing and storage environments. This compressor is engineered to adapt to a wide array of industrial applications, providing stable cooling regardless of external challenges.
Deep Freeze Storage: Perfectly suited for the ultra-low temperatures required for preserving the cellular integrity of premium meats, poultry, and deep-sea fish.
Agricultural Preservation: Maintains the crispness, color, and nutritional value of freshly harvested vegetables and fruits in large-scale agricultural holding rooms.
Refrigerant Flexibility: Fully compatible with industry-standard refrigerants including R22 and the environmentally conscious R404A, allowing for flexible system design.
Harsh Environment Resilience: The robust 234 kg cast-iron chassis and hermetic seals protect the internal mechanics from high humidity, airborne particulates, and extreme ambient temperature fluctuations.
Downtime is the enemy of profitability. We designed this compressor with the maintenance engineer in mind, ensuring that routine inspections and servicing can be performed swiftly and safely.
Accessible Sight Glasses: Strategically placed oil level sight glasses allow technicians to perform instant visual inspections of the lubricant condition without dismantling any components.
Streamlined Piping Connections: Featuring standard Φ35 mm suction and Φ42 mm discharge lines, the unit facilitates rapid brazing and integration into existing copper pipe networks.
Modular Component Layout: The cylinder heads, valve plates, and oil pump are designed for quick removal, allowing for on-site servicing rather than requiring complete unit replacement.
Integrated Safety Mechanisms: Built-in ports for high/low-pressure switches and oil pressure differential controls ensure the system automatically shuts down before catastrophic failures can occur.
Procurement decisions require absolute confidence in product reliability. Our manufacturing facilities adhere to the most stringent global quality control protocols, ensuring every unit that leaves our floor is ready for immediate, rigorous use.
Rigorous Pressure Testing: Every compressor undergoes a severe 2.8MPA pressure retention test to guarantee absolute hermetic integrity and zero refrigerant leakage.
Comprehensive Run-In Procedures: Prior to shipping, each unit is subjected to a 100% functional electrical and mechanical run-in test to verify current draw, acoustic levels, and oil pressure.
Global Certifications: Manufactured in facilities that strictly adhere to ISO9001 quality management systems, with products carrying CE marks to meet stringent European safety directives.
Traceable Manufacturing: From the casting of the block to the final coat of paint, every step is documented and traceable, ensuring consistent batch-to-batch excellence.
We understand that off-the-shelf solutions do not always meet complex project requirements. As a direct manufacturer, we offer comprehensive engineering services to tailor our refrigeration technology to your exact specifications.
OEM & ODM Services: We provide extensive private labeling and deep customization options, allowing you to integrate our compressors seamlessly into your branded equipment lines.
Advanced 3D Modeling: Our engineering team utilizes cutting-edge 3D design software to provide precise spatial layouts and integration blueprints before physical production begins.
Custom Voltage Configurations: Beyond standard parameters, we can wind motors to accommodate highly specific regional voltage and frequency requirements for specialized international projects.
End-to-End Technical Support: From initial load calculation and model selection to post-installation troubleshooting, our dedicated engineers provide continuous, expert guidance.
If you don't know which model is suitable for you, please contact we without hesitation, after tell us your requirements, we shall be glad to give you our professional advise.
And if all this model don't suit for you, we have advanced software and professional team of engineers can design product for you.
We can provide designing data and prodcution drawings.
We have a wealth of exhibition experience, where we continuously showcase our products, exchange technologies and listen to customer demands. These are some real-time photos from the exhibition site, witnessing every step of our joint growth with the industry.
The standard products are ready for immediate use, while the customized ones are specially made for you. The difference lies not only in the product itself, but also in the depth of coordination throughout the entire service process.
From the initial communication of the plan to the satisfactory feedback received after the final product was delivered，we have customized products for many customers, these are some projects we did before，Covering various needs and scenarios.
To meet various scenarios and requirements, we have also introduced more product categories, aiming to provide you with a more comprehensive experience. Please click on each category label to quickly browse the preferred products.
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Partnering with the right manufacturer is critical to the long-term success of your cooling infrastructure. We bring decades of specialized experience, a robust global supply chain, and an unwavering commitment to technological advancement.
Direct Manufacturer Advantage: By eliminating intermediaries, we offer highly competitive pricing structures while maintaining absolute control over material quality and production timelines.
Rapid Global Fulfillment: With streamlined logistics networks and substantial inventory reserves, we ensure fast delivery times to keep your project schedules on track.
Comprehensive Ecosystem: Beyond compressors, we supply a full range of compatible air-cooled evaporators, condensers, and control panels, providing a true one-stop procurement experience.
Proven Track Record: Our equipment is trusted by leading food processing plants, pharmaceutical storage facilities, and logistics hubs worldwide, standing as a testament to our enduring reliability.
To assist your engineering and procurement teams in making an informed decision, we have compiled answers to the most critical technical inquiries regarding our 30HP two-stage compressor.
What is the primary advantage of a two-stage compressor over a single-stage unit in deep freezing applications?
A two-stage compressor divides the compression process into two distinct phases, with intercooling between stages. This drastically lowers the final discharge temperature, prevents oil carbonization, and significantly improves the volumetric efficiency and COP when operating at ultra-low evaporation temperatures (e.g., -30°C to -50°C).
How does the forced-lubrication system enhance the operational lifespan of this 30HP model?
Unlike splash lubrication, the integrated oil pump actively forces lubricant under pressure to all critical bearings, wrist pins, and cylinder walls. This ensures a constant, protective oil film is maintained even during high-load startups or low-speed operations, drastically reducing mechanical wear.
Can this compressor operate reliably in regions with extremely high ambient temperatures?
Yes. The robust cast-iron construction, combined with the inherently cooler operation of the two-stage compression cycle and compatibility with high-efficiency condensers, allows this unit to maintain stable cooling capacities even when external ambient temperatures soar.
What is the function of the 140W crankcase heater, and when does it operate?
The crankcase heater operates during the compressor's off-cycle. It warms the lubricating oil to prevent refrigerant gas from condensing and mixing with the oil. This prevents "oil foaming" upon startup, ensuring the oil pump delivers pure lubricant rather than a foamy mixture, thereby protecting the bearings.
Do you offer matching condensing units and evaporators for this specific compressor?
Absolutely. As a comprehensive solutions provider, we design and manufacture perfectly matched air-cooled or water-cooled condensers, as well as specialized evaporators, ensuring optimal thermodynamic balance and simplified installation for your entire system.
