The DJW400C is a gasoline engine-driven

The DJW400C is a gasoline engine-driven, high-flow, high-pressure breathing air compressor. It features a three-cylinder, four-stage compression design, air cooling, belt drive, and forced oil-pump lubrication. It requires no external power supply, making it particularly suitable for field, mobile, and off-grid applications. It has a rated flow of 400 L/min, a rated working pressure of 300 bar, a gasoline engine power of 20.8 HP, and a speed of 1650 RPM. With a compact structure and stable operation, it is suitable for firefighting, diving, marine, mining, field rescue, industrial respiratory protection, and other applications.

DJW400C Breathing Air Compressor – Product Parameters

DJW400C Breathing Air Compressor – Product Features

• Gasoline engine driven, no external power supply required
  Suitable for field, mountain, marine, emergency rescue, and off-grid applications, with strong mobility and flexible deployment.

• High flow and high pressure output
  Rated flow of 400 L/min and rated working pressure of 300 bar, meeting the demand for rapid filling of high-pressure breathing air cylinders.

• Three-cylinder, four-stage compression
  High compression efficiency, smooth stage-by-stage pressure rise, and reliable operation under continuous high-pressure conditions.

• Forced oil-pump lubrication
  Continuously supplies oil to key moving parts, ensuring stable lubrication, reducing wear, and extending compressor service life.

• Air-cooled design
  No external cooling water required, adapting to various working environments with more flexible installation and operation.

• Belt drive system
  Smooth operation, vibration absorption, and easy maintenance and replacement.

• Manual stop and manual drain
  Direct and reliable operation, allowing on-site personnel to control the compressor and discharge condensate according to actual working conditions.

• Dual filling connections
  Equipped with G5/8 × 2 filling connections and 2 sets of filling hoses, allowing two cylinders to be connected at the same time for higher filling efficiency.

• Comprehensive safety protection
  Equipped with 3 interstage safety valves, providing reliable overpressure protection for each compression stage.

• Visual oil sight glass
  Allows convenient checking of oil level and oil condition for easier and more intuitive maintenance.

• Compact structure, easy to move
  Approximate dimensions: 1400 × 630 × 570 mm; approximate weight: 210 kg. Suitable for vehicle-mounted, field, and mobile filling operations.

• Wide application range
  Suitable for firefighting, diving, marine, mining, field rescue, industrial respiratory protection, high-pressure cylinder filling, and other applications.

DJW400A Breathing Air Compressor – Product Applications

• Firefighting and Rescue
  Suitable for fire stations, fire rescue teams, and emergency response units, providing high-pressure breathing air for positive-pressure self-contained breathing apparatus (SCBA) cylinders.

• Diving Operations
  Suitable for diving clubs, marine engineering, underwater construction, and underwater inspection, providing 300 bar high-pressure air for self-contained diving cylinders.

• Marine and Offshore Platforms
  Suitable for ships, offshore platforms, port operations, and maritime emergency rescue, filling breathing protection cylinders and life-saving equipment cylinders.

• Mining and Tunnel Engineering
  Suitable for mine rescue, mining operations, tunnel construction, and underground engineering, providing safe filling for breathing apparatus cylinders in confined-space operations.

• Industrial Safety Protection
  Suitable for petrochemical, power maintenance, metallurgy, pharmaceutical, painting, and confined-space operations where positive-pressure breathing apparatus is required.

• Emergency Response and Rescue
  Suitable for earthquake, flood control, fire, and accident rescue sites, providing rapid filling for rescue personnel’s breathing air cylinders.

• Military, Police, and Special Operations
  Suitable for public security, armed police, special police, border defense, counter-terrorism, and special operations units, providing high-pressure breathing air support.

• Cylinder Filling Stations and Testing Institutions
  Suitable for breathing cylinder filling stations, cylinder testing institutions, and safety inspection centers for filling certified high-pressure breathing cylinders.

• Sports and Leisure
  Suitable for diving sports, shooting sports, paintball, and other activities requiring high-pressure clean air cylinder filling.

• Other High-Pressure Air Filling Applications
  Suitable for industrial, scientific research, and special operations scenarios requiring 300 bar clean high-pressure air.

Why Choose Us?

Dejura (Shanghai) Compressor Machinery Co., Ltd. — a Sino-German joint venture founded in 2011, supported by German Dejura technology, with production in Shanghai according to European standards.

• German Technology, European Quality: Fully introduced German compressor technology and strict quality control.

• Complete Certifications: ISO 9001, ISO 14001, ISO 45001, TUV, EAC, High-Tech Enterprise, and Five-Star Green Supply Chain.

• Global Service: Exports to over 140 countries, coverage across eight major regions in China, and fast response.

• Industry Recognition: Widely used in firefighting breathing air, diving, marine exploration, CNG stations, oilfield gas injection, hydropower stations, ship leak detection, scientific research, and energy equipment.

• DJW400A — A Reliable Choice: 400 L/min, 300 bar, three-cylinder four-stage compression, forced oil-pump lubrication, air cooling, automatic stop at preset pressure, G5/8×2 filling connections, optional PLC.

Choose Dejura for German quality, international certifications, and global service — reliable protection for breathing safety.