DJW400A Breathing Air Compressor

The DJW400A is a 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 is compatible with a 380V/50Hz power supply, with a power of 11 kW, a rated flow of 400 L/min, and a rated working pressure of 300 bar. The unit has a compact structure and stable operation, making it suitable for firefighting, diving, marine, mining, industrial respiratory protection, high-pressure gas cylinder filling, and other applications.

DJW400A Breathing Air Compressor – Product Parameters

DJW400A Breathing Air Compressor – Product Features

• High flow and high pressure
  Rated flow of 400 L/min (24 m³/h / 14.1 CFM) and working pressure of 300 bar (30 MPa / 4,351 psi), suitable for fast filling of high-pressure breathing air cylinders.

• Three-cylinder, four-stage compression
  Provides efficient compression, smoother stage-by-stage pressure rise, and reliable performance under continuous high-pressure operation.

• Forced oil-pump lubrication
  Ensures stable oil supply to key moving parts, reduces wear, and helps extend the service life of the compressor.

• Air-cooled design
  No external cooling water required, making installation and operation more flexible for both fixed and mobile applications.

• Belt drive system
  Offers smooth operation, vibration absorption, and easy maintenance.

• Automatic stop at preset pressure
  The compressor stops automatically when the cylinder reaches the set pressure, reducing manual supervision and improving safety.

• Dual filling connections
  Equipped with G5/8 × 2 filling connections and 2 sets of filling hoses, allowing efficient filling of two cylinders.

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

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

• Manual drain system
  Enables regular discharge of condensate to help keep the system clean and stable.

• Compact and durable structure
  Approximate dimensions: 1100 × 700 × 800 mm; approximate weight: 200 kg. Compact design with stable operation.

• Optional PLC control
  Available with PLC control for automated operation, monitoring, and centralized management.

• Wide application range
  Suitable for firefighting, diving, marine, mining, industrial respiratory protection, high-pressure cylinder filling, and other breathing air applications.
  When used for breathing air, an appropriate breathing air purification and filtration system should be used to meet relevant air quality standards.

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.