Oil Free Water Lubricated Rotary Screw Air Compressor （PM VSD/FSD）-Top Screw Air Compressor Manufacturers in China

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Oil Free Water Lubricated Rotary Screw Air Compressor （PM VSD/FSD）

Model: DMWV-G（Water Lubricated）& DMW-G（Water Lubricated）series
Brand: DREAM
Working Pressure: 7~10 [ bar ] 101.5~145.0 [ psig ]
Air Capacity （FAD）: 1.8~25 [ m³/min ] 63.6~882.9 [ cfm ]
Power:22~132 [ KW ] 29.9~179.5 [ hp ]
Other parameters, please inquiry us.

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Model NO	DMW (V)-G	Power Source	AC Power
Cylinder Position	Vertical	Structure Type	Closed Type
Installation Type	Stationary Type	Type	Twin-Screw Compressor
Lubrication Style	Oil-free	Drive Mode	Direct Driven
Configuration	Stationary	Invertor	Variable Speed Drive or Fixed Speed Drive
Working Power ( HP )	30 ~ 180 [ hp ]	Transport Package	Export Standard Packing
Working Power ( KW )	22 ~132 [ KW ]	Trademark	DREAM
Working pressure ( bar )	7~10 [ bar ]	HS Code	8414804100
Working pressure ( PSI )	101~145 [ psig ]	Packing Size ( mm )	500024002400(Varies on different model NO.)
Air Delivery ( cfm )	64~883 [ cfm ]	Package Gross Weight ( KG )	7200 KG (Varies on different model NO.)
Air Delivery ( m³/min )	1.8~25 [ m³/min ]	Specification	CE, ISO 8573-1 Class 0,ISO 9000,SGS
Cooling Mathod	Air Cooling or water cooling (Varies on different model NO.)	Origin	Zhejiang, China
Motor	Permanent Magnet Synchronous Motor	Production Capacity	500sets/Month
Customization	Available	Warranty	1-5 Years on the different Model NO.

DMWV-G series

Oil-free water-lubricated permanent magnet variable frequency screw air compressor

The compressed air of the oil-free screw air compressor is 100% pure oil-free, reaching the ISO 8573-1 CLASS 0 level, because it directly replaces the lubricating oil with water, and can also achieve the four effects of lubrication, cooling, sealing, and noise reduction, and the discharged water is pollution-free, very environmentally friendly.

Product Features

■ Stable and reliable air end, water lubricated, 100% oil-free, quality assurance.

■ IE5 motor, save your electricity cost, IP54, B-level temperature rise is suitable for harsh environments such as large dust and high temperature;

■ Coupling connection, more energy saving;

■ Multiple noise reduction design, calculated according to noise theory, with special flame retardant muffler cotton inside, to reduce the noise of the unit and provide a quieter use environment.

■ Axial fan with tube-fin cooler has high wind pressure and low noise. It is exhausted upward through a specially designed air duct to prevent hot air from returning;

■ Modular design of water cooler, vertical installation, high heat exchange efficiency, stable operation and long service life;

■ Motor overload protection.

■ The use of 304 stainless steel pipes will not rust and corrode even under high temperature and humidity conditions, and the service life is longer

What are the main features of the Dream oil-free water-lubricated screw compressor?

Answer: The Dream oil-free water-lubricated screw compressor features oil-free compression, water-air separation, multi-stage cooling, excellent shaft seals, high-precision machining, high-performance materials, high efficiency, environmental friendliness, low maintenance costs, and suitability for special industries requiring high air quality.

How does it ensure the purity of compressed air?

Answer: By using water as the lubricating and cooling medium, it avoids contact between oil and compressed air, thus ensuring air purity. Additionally, the water-air separator effectively removes moisture from the compressed air.

Can it be used in the medical industry?

Answer: Absolutely. Its oil-free and clean compressed air makes it ideal for medical equipment such as ventilators and anesthesia machines, ensuring patients breathe pure air.

Is it suitable for the food and beverage industry?

Answer: Yes, it is. The oil-free compressed air prevents contamination of food products, making it perfect for use in the food and beverage industry.

What about the electronics industry?

Answer: The Dream compressor provides high-quality oil-free air, meeting the stringent requirements of the electronics industry for compressed air quality during manufacturing processes.

How does it handle cooling without oil?

Answer: It is equipped with pre-coolers, intercoolers, and aftercoolers to perform multi-stage cooling on the compressed air, ensuring it meets the specified discharge temperature.

What materials are the rotors made of?

Answer: The rotors are typically made of stainless steel, ensuring excellent mechanical performance and corrosion resistance.

Is it environmentally friendly?

Answer: Yes, it is. By eliminating the use of oil, it reduces the risk of oil pollution, making it more environmentally friendly.

How often does it need maintenance?

Answer: Due to the water lubrication, it reduces dependence on oil, thereby lowering maintenance costs and workload. Regular checks and cleanings, such as filters and coolers, are recommended based on usage.

What is the expected lifespan of the compressor?

Answer: With proper maintenance and care, the Dream oil-free water-lubricated screw compressor can have a long lifespan. Regular preventive maintenance, as recommended by the manufacturer, will help ensure its longevity.

How do I clean the filters?

Answer: Filters should be cleaned regularly to reduce air resistance and improve efficiency. For harsh environments, check the filters monthly or more frequently. Use compressed air or a dedicated cleaning tool to clean the filters.

How do I handle condensate water?

Answer: Condensate water should be drained regularly to prevent it from affecting the quality of compressed air and corroding pipelines or tanks. Check the condensate drainage system regularly and empty the tank as needed.

Can it operate quietly?

Answer: Yes, the Dream compressor is designed to operate quietly. However, long-term operation may produce some noise and vibration. Regular monitoring and timely maintenance can help address any abnormal noise or vibration.

What should I do if the compressor fails to start?

Answer: First, check for control voltage. If absent, inspect the fuses. If voltage is present, check the control relays and timers. If the issue persists, consult the manufacturer or a qualified technician.

Is there a warranty for this product?

Answer: Yes, Dream provides a warranty for this product. Please refer to the warranty terms and conditions provided by Dream for specific details and coverage.

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Oil Free Water Lubricated Rotary Screw Air Compressor （PM VSD/FSD）