Dw-85/8 Large Industrial Nitrogen Compressor 85m3/Min 0.80MPa 500kw 2-Row 2-Stage Oil-Lubricated for Chemical and Steel Plants
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Product Highlights
- Single-machine 85 m3/min at 0.80 MPa nitrogen compression - covers full nitrogen demand of large chemical or steel plant with one control system and one maintenance schedule.
- Gas-tight piston rod sealing with closed vent system - mandatory safety feature for nitrogen service preventing asphyxiation risk from atmospheric leakage, standard on all DW-85/8 units.
- 500 kW on 6kV/10kV MV supply - direct connection to existing medium-voltage distribution at large industrial facilities without step-down transformer investment.
Product Attributes
- Customization
- Available
- After-sales Service
- 2 Years
- Warranty
- 2 Years
- Model NO.
- DW-85/8
- Lubrication Style
- Oil-free
- Cooling System
- Air Cooling
- Cylinder Position
- Horizontal
- Structure Type
- Semi-Closed Type
- Compress Level
- Double-Stage
- Refrigerant Type
- -
- Exhaust Pressure
- 1.8MPa
- Exhaust Flow
- 0.7m³/Min
- Supply Air Temperature
- Ambient Temperature +15℃
- Gas Supply Oil Content
- ≤2ppm
- Noise
- 62db
- Main Motor Power
- 11kw
- Fan Motor Power
- 150W
- Dimensions
- 1100*680*1010mm
- Transport Package
- Wooden Case
- Specification
- Customize
- Trademark
- EPT
- Origin
- Zhejiang China
- HS Code
- 8414309000
- Production Capacity
- 10 Piece/Month
Shipping
- Shipping Cost:
- Contact the supplier about freight and estimated delivery time.
Online Trading Protection
- Payment Guarantee
-
Platform-protected payments with refund support for eligible order issues.
- Platform Logistics
- Clearer shipment tracking with platform-supported logistics.
- Inspection Service
- Optional pre-shipment inspection for quality and quantity checks.
- After-Sales & Dispute Handling
- Platform-assisted dispute resolution, including refunds or returns when applicable.
Only orders placed and paid through Made-in-China.com Secured Trading are eligible for payment protection and the corresponding platform services.
Product Images of Dw-85/8 Large Industrial Nitrogen Compressor 85m3/Min 0.80MPa 500kw 2-Row 2-Stage Oil-Lubricated for Chemical and Steel Plants
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Dw-85/8 Large Industrial Nitrogen Compressor 85m3/Min 0.80MPa 500kw 2-Row 2-Stage Oil-Lubricated for Chemical and Steel Plants -
Dw-85/8 Large Industrial Nitrogen Compressor 85m3/Min 0.80MPa 500kw 2-Row 2-Stage Oil-Lubricated for Chemical and Steel Plants -
Dw-85/8 Large Industrial Nitrogen Compressor 85m3/Min 0.80MPa 500kw 2-Row 2-Stage Oil-Lubricated for Chemical and Steel Plants -
Dw-85/8 Large Industrial Nitrogen Compressor 85m3/Min 0.80MPa 500kw 2-Row 2-Stage Oil-Lubricated for Chemical and Steel Plants -
Dw-85/8 Large Industrial Nitrogen Compressor 85m3/Min 0.80MPa 500kw 2-Row 2-Stage Oil-Lubricated for Chemical and Steel Plants -
Dw-85/8 Large Industrial Nitrogen Compressor 85m3/Min 0.80MPa 500kw 2-Row 2-Stage Oil-Lubricated for Chemical and Steel Plants -
Dw-85/8 Large Industrial Nitrogen Compressor 85m3/Min 0.80MPa 500kw 2-Row 2-Stage Oil-Lubricated for Chemical and Steel Plants
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Product Description
| No. | Model | Pattern | Capacity (m³/min) | Pressure (MPa) | Size L x W x H (mm) | Weight (t) | Power (kW) | Voltage (V) |
|---|---|---|---|---|---|---|---|---|
| 1 | LW-52/3 | 2-row 2-stage | 52 | 0.30 | 2995 x 2170 x 2170 | 4.28 | 220 | 380/6k or 10k |
| 2 | ZW-2/4 | 2-row 2-stage | 2 | 0.40 | 720 x 763 x 1475 | 0.60 | 18.5 | 380 |
| 3 | LW-40/4 | 2-row 2-stage | 40 | 0.40 | 2790 x 1600 x 2200 | 4.50 | 200 | 380/6k or 10k |
| 4 | ZW-8/6 | 2-row 2-stage | 8 | 0.60 | 2250 x 1296 x 2200 | 2.00 | 55 | 380 |
| 5 | ZW-3/7 | 2-row 2-stage | 3 | 0.70 | 720 x 763 x 1274 | 0.80 | 22 | 380 |
| 6 | ZW-6/7 | 2-row 2-stage | 6 | 0.70 | 2250 x 1296 x 2200 | 2.00 | 45 | 380 |
| 7 | ZW-4/8 | 2-row 2-stage | 4 | 0.80 | 2250 x 1296 x 2200 | 2.00 | 30 | 380 |
| 8 | LW-10/8 | 2-row 2-stage | 10 | 0.80 | 2340 x 910 x 2070 | 1.80 | 65 | 380 |
| 9 | LW-20/8 | 2-row 2-stage | 20 | 0.80 | 2732 x 1550 x 2432 | 3.00 | 132 | 380 |
| 10 | LW-30/8 | 2-row 2-stage | 30 | 0.80 | 2890 x 1600 x 2173 | 4.12 | 200 | 380 |
| 11 | LW-50/8 | 2-row 2-stage | 50 | 0.80 | 2630 x 1600 x 2235 | 6.50 | 300 | 380/6k or 10k |
| 12 | LW-52/8 | 2-row 2-stage | 52 | 0.80 | 2360 x 1655 x 2235 | 6.00 | 350 | 6k or 10k |
| 13 | LW-60/8 | 2-row 2-stage | 60 | 0.80 | 2380 x 1500 x 2560 | 6.50 | 350 | 6k or 10k |
| 14 | DW-85/8 | 2-row 2-stage | 85 | 0.80 | 5456 x 3518 x 2535 | 13.00 | 500 | 6k or 10k |
| 15 | DW-100/8 | 2-row 2-stage | 100 | 0.80 | 5456 x 3518 x 2535 | 13.00 | 600 | 6k or 10k |
| 16 | DW-120/8 | 2-row 2-stage | 120 | 0.80 | 5800 x 3518 x 2535 | 15.00 | 710 | 6k or 10k |
| 17 | DW-130/8 | 2-row 2-stage | 130 | 0.80 | 6000 x 3640 x 3000 | 18.00 | 800 | 6k or 10k |
| 18 | LW-25/10 | 2-row 2-stage | 25 | 1.00 | 2500 x 1600 x 2700 | 4.50 | 200 | 380 |
| 19 | LW-42/10 | 2-row 2-stage | 42 | 1.00 | 2380 x 1600 x 2560 | 6.00 | 315 | 380/6k or 10k |
| 20 | LW-18/12 | 2-row 2-stage | 18 | 1.20 | 2632 x 1550 x 2332 | 3.00 | 160 | 380 |
| 21 | LW-16.5/13 | 2-row 2-stage | 16.5 | 1.30 | 2675 x 1550 x 2520 | 3.00 | 160 | 380 |
| 22 | ZW-5.3/16 | 2-row 2-stage | 5.3 | 1.60 | 1947 x 1900 x 2580 | 3.97 | 55 | 380 |
| 23 | ZW-5.3/16 | 2-row 2-stage | 5.3 | 1.60 | 2180 x 910 x 2164 | 1.80 | 55 | 380 |
| 24 | LW-25/16 | 2-row 2-stage | 25 | 1.60 | 2790 x 1514 x 2230 | 4.35 | 240 (250) | 380/6k or 10k |
| 25 | LW-20/18 | 2-row 2-stage | 20 | 1.80 | 2500 x 1600 x 2700 | 4.20 | 240 (250) | 380/6k or 10k |
| 26 | LW-40/18 | 2-row 2-stage | 40 | 1.80 | 2790 x 1685 x 2235 | 7.00 | 400 | 6k or 10k |
| 27 | ZW-3.1/1.5~20 | 2-row 1-stage | 3.1 | 2.00 | 2250 x 1296 x 2200 | 2.60 | 75 | 380 |
| 28 | LW-5.4/4.6~20 | 2-row 1-stage | 5.4 | 2.00 | 2570 x 1550 x 2345 | 2.40 | 132 | 380 |
| 29 | ZW-0.97/7.5~30 | 2-row 1-stage | 0.97 | 3.00 | 2035 x 1240 x 1976 | 2.60 | 45 | 380 |
| 30 | ZW-2/5~30 | 2-row 1-stage | 2 | 3.00 | 2190 x 1296 x 1976 | 2.60 | 75 | 380 |
| 31 | ZW-2/5~30 (module) | 2-row 1-stage | 2 | 3.00 | 2190 x 1296 x 1976 | 2.60 | 75 | 380 |
| 32 | ZW-2/1~25 | 2-row 1-stage | 2.1 | 2.50 | 1900 x 1296 x 1910 | 2.60 | 75 | 380 |
| 33 | 3ZW-6/30 | 3-row 3-stage | 6 | 3.00 | 1845 x 1660 x 2360 | 3.00 | 75 | 380 |
| 34 | LW-6/30 | 3-row 3-stage | 6 | 3.00 | 3687 x 1100 x 2273 | 2.70 | 65 | 380 |
| 35 | 3ZW-9.5/30 | 3-row 3-stage | 9.5 | 3.00 | 1845 x 1660 x 2360 | 3.50 | 110 | 380 |
| 36 | LW-9.5/30 | 2-row 2-stage | 9.5 | 3.00 | 3127 x 1550 x 2543 | 3.70 | 110 | 380 |
| 37 | LW-10/30 | 2-row 2-stage | 10 | 3.00 | 3127 x 1550 x 2543 | 3.70 | 132 | 380 |
| 38 | ZW-13/30 (module) | 2-row 2-stage | 13 | 3.00 | 2764 x 2000 x 3277 | 6.00 | 160 | 380 |
| 39 | LW-13/30 (module) | 2-row 2-stage | 13 | 3.00 | 2860 x 1685 x 2610 | 6.60 | 160 | 380 |
| 40 | LW-17/30 | 2-row 2-stage | 17 | 3.00 | 2950 x 1800 x 2440 | 5.00 | 220 | 380/6k or 10k |
| 41 | LW-20/30 | 2-row 2-stage | 20 | 3.00 | 3500 x 2600 x 1850 | 6.00 | 240 | 380/6k or 10k |
| 42 | LW-33/30 | 2-row 2-stage | 33 | 3.00 | 3065 x 1685 x 2440 | 6.60 | 350 | 380/6k or 10k |
| 43 | DW-43/30 | 2-row 4-stage | 43 | 3.00 | 6585 x 3595 x 2095 | 13.00 | 550 | 6k or 10k |
| 44 | DW-54/30 | 2-row 4-stage | 54 | 3.00 | 6585 x 3595 x 2095 | 13.00 | 630 | 6k or 10k |
| 45 | DW-60/30 | 2-row 4-stage | 60 | 3.00 | 8500 x 2440 x 3020 | 17.00 | 710 | 6k or 10k |
| 46 | DW-70/30 | 2-row 4-stage | 70 | 3.00 | 8500 x 2440 x 3020 | 17.00 | 850 | 6k or 10k |
| 47 | 4MW-80/30 | 4-row 4-stage | 80 | 3.00 | 6800 x 3900 x 3200 | 26.00 | 900 | 6k or 10k |
| 48 | 4MW-100/30 | 4-row 4-stage | 100 | 3.00 | 6800 x 4000 x 3200 | 26.50 | 1200 | 6k or 10k |
| 49 | 4MW-81/3.3~36 | 4-row 2-stage | 81 | 3.60 | 6800 x 4500 x 3200 | 30.00 | 2000 | 6k or 10k |
| 50 | ZW-5/40 | 2-row 3-stage | 5 | 4.00 | 1920 x 1900 x 2580 | 3.97 | 75 | 380 |
The DW-85/8 is a large-scale oil-lubricated reciprocating piston nitrogen compressor delivering 85 m3/min at 0.80 MPa, driven by a 500 kW motor on 6kV or 10kV medium-voltage supply. The 2-row 2-stage horizontally opposed configuration provides inherent dynamic balance across both cylinder rows, minimising foundation vibration at the high power levels required for this output and reducing structural requirements for the compressor installation. At 13 tonnes and a footprint of 5456 x 3518 x 2535 mm, the DW-85/8 is a high-capacity single-train nitrogen compression solution for large chemical plants, steel mills, and industrial gas facilities requiring continuous nitrogen supply.
Nitrogen compression at the DW-85/8 scale is a continuous-duty application with no planned shutdowns between turnaround intervals. The oil-lubricated cylinder design provides long piston ring and valve service life, with planned maintenance intervals designed to align with plant turnaround schedules of 3 to 5 years. Water-cooled interstage and aftercoolers maintain stage discharge temperatures within design limits, protecting downstream nitrogen distribution equipment and extending the service life of sealing components.
The gas-tight piston rod sealing system on the DW-85/8 prevents nitrogen migration into the crankcase and eliminates nitrogen leakage to the surrounding environment. Nitrogen displaces oxygen and creates an asphyxiation hazard in enclosed spaces - gas-tight rod sealing with a closed vent system is therefore a mandatory safety feature on all large nitrogen compressors, and is standard equipment on the DW-85/8.
The control system includes suction and discharge pressure transmitters, interstage temperature sensors, lubricating oil pressure monitoring with automatic shutdown, PLC control panel with local HMI and remote SCADA interface via Modbus/RS485, automatic load-unload cycling, and integration with site nitrogen monitoring systems.
Chemical plants - inert blanketing and purging: Large chemical plants use nitrogen continuously for vessel blanketing, pipeline purging, reactor inerting, and equipment maintenance purge. The DW-85/8 at 85 m3/min covers the combined nitrogen demand of a large petrochemical complex requiring continuous inert gas supply across multiple process units simultaneously.
Steel mills - annealing and heat treatment: Continuous annealing furnaces for steel strip, bell annealing furnaces for coil products, and bright annealing furnaces for stainless steel all require large volumes of nitrogen as a protective atmosphere. The DW-85/8 covers the nitrogen supply requirement of a large continuous annealing line processing 500,000 to 1,000,000 tonnes of steel strip per year.
Steel mills - converter and blast furnace: Nitrogen is used for converter stirring, tuyere cooling, and equipment purging in integrated steel mills. The sustained 85 m3/min output of the DW-85/8 covers the nitrogen requirement of a steel plant producing 3,000 to 5,000 tonnes of crude steel per day.
Electronics manufacturing - semiconductor fabrication: Semiconductor fabs and electronics component manufacturers use nitrogen for solder reflow atmospheres, wafer storage, and process chamber purging. Large electronics manufacturing complexes require sustained nitrogen supply in the 50 to 100 m3/min range that the DW-85/8 covers from a single machine.
Food and beverage - modified atmosphere packaging: Large food manufacturers using nitrogen for MAP packaging of fresh produce, meat, dairy products, and snack foods require continuous nitrogen supply. The DW-85/8 covers the nitrogen compression requirement of a large food packaging facility operating multiple MAP lines around the clock.
Petrochemical plants - pipeline purging and pressure testing: Pipeline commissioning, maintenance purging, and hydrostatic testing operations at large petrochemical complexes require high-flow nitrogen supply. The DW-85/8 provides the sustained flow rate required for rapid purging of large-diameter pipelines and pressure vessels.
Comparison with Similar Products:
Atlas Copco Gas and Process and Ingersoll Rand supply large nitrogen compressors in the 70 to 100 m3/min class for chemical and steel plant applications. Burckhardt Compression and Howden manufacture horizontally opposed reciprocating nitrogen compressors at this capacity level for process industry service. The DW-85/8 provides equivalent output and 2-row 2-stage design at significantly lower capital cost, with gas-tight rod sealing as standard equipment, 6kV/10kV motor for direct MV connection, full safety documentation package, and ISO 9001 certified manufacturing quality with factory-direct technical support and spare parts.
EVER POWER is a national second-level enterprise and a provincial advanced enterprise. Xinlan Company currently has over 350 employees, total assets of 300 million RMB, and more than 600 sets of various production and processing equipment. The company has specialized production plants including a foundry, machining plant, pressure vessel plant, and assembly plant, as well as functional departments such as a compressor research institute, sales department, marketing department, customer service office, finance department, manufacturing department, supply department, process equipment department, and general office.
EVER POWER produces nearly a thousand varieties of compressors, which are now widely used in industries such as petrochemicals, air separation and cryogenics, energy conservation and environmental protection, coal mining, food fermentation, and glass building materials. Its products enjoy a high reputation domestically and are exported to many countries.
EVER POWER focuses on the design and manufacturing of reciprocating compressors and Class I, II, and III pressure vessels. Its compressor products are currently divided into two main categories: reciprocating and screw compressors. The reciprocating compressors currently include numerous series such as M, H, D, L, P, and Z. Our products cover a single-unit pressure range of 0.1~600 Nm³/min; a pressure range of 0.1~32.0 MPa; a piston force of 1.5~50T; and a drive power of 5.5~5000 KW. Compressible media include: air, gas, oxygen, carbon dioxide, carbon monoxide, natural gas, methane, coke oven (blast furnace) gas, coalbed methane, biogas, acetylene, chloromethane, vinyl chloride, mixed gases, liquefied petroleum gas, petroleum-associated gases, and various flammable and explosive raw material gases. Our company aims to become one of the largest and most comprehensive manufacturers of large and medium-sized reciprocating process compressors in China.
EVER POWER offers customized compressor system solutions for different scales, based on the design concepts of equipment integration, energy-saving operation, intelligent control, and convenient maintenance. Integrated skid-mounted power systems can be provided according to customer needs, with optional soft start, PLC control, frequency converter systems, and remote and wireless monitoring systems. We can provide designs for special working conditions and environments such as outdoor, low temperature, high altitude, and marine environments, as well as supporting power designs such as electric motors, internal combustion engines, and steam turbines.
About the Supplier
This supplier has been audited by SGS. Verify the report on the official SGS website with ID "QIP-ASR243740". Items marked "
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Company Profile
Company Overview
Hangzhou ever-power transmission Co., Ltd. is a specialist in making all kinds of mechanical transmission and hydraulic transmission like:
Parallel shaft helical gear reducers planetary gearboxes, worm reducers, in-line helical gear speed agricultural reducers, helical bevel reducers, helical worm gear reducers agricultural gearboxes, tractor gearboxes, auto gearboxes, pto drive shafts, special reducer&related gear components and other related products, sprockets, hydraulic system, vacuum pumps, fluid coupling, gear racks, chains, timing pulleys, udl speed variators, V pulleys, hydraulic cylinder, gear pumps, screw air compressors, shaft collars low backlash worm reducersand so on. Furthermore, we can produce customized variators, geared motors, electric motors and other hydraulic products according to customers'drawings.
We have exported our products to clients around the world and earned a good reputation because of our superior product quality and after-sales service.
We warmly welcome customers both at home and abroad to contact us to negotiate business, exchange information and cooperate with us.
We staff over 1500 workers, and have CNC turning machines and CNC work centers.
We are one of the best manufacturer and supplier in China, choose quality manufacturers, suppliers, exporters at hzpt. COM.
For more details, please check out our products catalogs and machine lists.
Why Choose Us
We enthusiastically provide sincere and prompt service to our customers and establish sustainable business relationship with them.
100% Factory inspection, we are responsible for any problems subjected to malfunction in warranty period.
We Can Provide You:
· On-time Delivery with More Choice
· Product Solutions and Service
· Long Quality Guarantee
· Local Technical Support
· Fast Response to Customers' Feedbacks in 24 hours
Also I would like to take this opportunity to give a brief introduction of our Ever-Power company:
Our company is a famous manufacturer of agriculture gearbox, worm reduce gearbox, PTO shafts, Sprockets, roller chains, bevel gear, pulleys and racks in China.
We have exported many products to our customers all over the world, we have long-time experience and strong technology support.
You also can check our website to know for more details, if you need our products catalogue, please contact with us.
Packaging
Plastic Bag+ Carton+Wooden case( If you have other requirements, we can customized according to customer requirements packaging. )
Shipping:
1. Most of the standard ones are in stock which we can send in 3-10 days after inspection and package.
2. Customized products delivery time should be determined according to the number.
About Our Factory & Business Background
-
Business Type
- Manufacturer/Factory & Trading Company
- Address
- No. 789 Shenhua Road, Hangzhou, China 310030
-
Plant Area
- 1000 square meters
-
Number of Employees
- 47
-
Registered Capital
- 1,000,000 RMB
-
Terms of Payment
- LC, D/P, T/T, PayPal, Western Union, Small-amount payment
-
International Commercial Terms(Incoterms)
- FOB, CIF, CFR, EXW
-
Average Lead Time
-
Peak Season Lead Time: 1-3 months
Off Season Lead Time: one month -
Nearest Port
- Ningbo Port, Shanghai Port
-
Minimum Order Quantity
- 20 Pcs
-
Supply Chain Partners
- 5
Our Production Capability & Technical Expertise
- Main Products
- Gearbox, Reducer, Sprocket, Gear, Chain, Pulley, Motor, Cylinder, Shaft, Coupling
-
Production Lines
- 1
-
Production Machines
- Cutting Machine, CNC Gear Grinding Machine, Gear Shaper, CNC Lathe, Drilling Machine, Wire Cutting Machine, Hydraulic Machine, Machining Center, Milling Machine, CMM, Torque Tester
-
QA/QC inspectors
- 6 people
-
Inspection Type for Finished Products
- Random inspection(Visual inspection & Function inspection)
-
Inspection Method for Finished Products
- Have instruction but no written records
-
Customization Options
- Customization from Samples, Customization from Designs, Full Customization, Minor Customization, Flexible customization
-
ODM Service Available
- Yes
-
R&D Engineers
- 1 people
-
Traceability of Raw Materials
- Yes
Our Industry Experience & Global Business Record
-
Year of Establishment
- 2006-11-15
-
Export Year
- 18 Years
-
Main Markets
- North America, South America, Europe, Southeast Asia/ Mideast, East Asia(Japan/ South Korea), Australia
-
Repeat Buyers Choice
- 50%~80%
-
Annual Export Revenue
- 13,958,580 USD
-
Number of Foreign Trading Staff
- 16
-
Overseas Agent/Branch
- No
-
New Products Launched in Last year
- No
Our Certifications, Standards & Industry Recognition
-
Cooperated with Fortune 500
- No
FAQ
- What is your lead time?
- Standard models are delivered in 30-60 days. Custom or large-capacity units require 60-120 days depending on specifications. Please contact us with your requirements for a confirmed schedule.
- Do you provide after-sales service and spare parts?
- Yes. We provide 12-month warranty on all principal components from commissioning date. Spare parts (piston rings, valve kits, rod packings, bearings) are stocked and dispatched within 5 working days. Remote technical support and on-site commissioning engineers are available.
- Can you customize the compressor for my specific gas and pressure?
- Yes. All models can be configured to customer process datasheets covering gas composition, suction and discharge pressures, flow rate, cooling utility, power supply voltage, and area classification. Please provide your gas analysis and process conditions at enquiry stage.
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