DJW250SH Breathing Air Compressor

DJW250SH is a gasoline-engine-driven, three‑stage compression, air‑cooled mobile breathing air filling pump, designed specifically for on‑site rapid charging of respiratory cylinders. The unit integrates forced oil‑pump lubrication, three‑stage safety protection, and dual charging outlets. With a compact structure and simple operation, it is ideally suited for high‑purity breathing air supply tasks in environments without electrical power or in mobile field operations.

Technical Data Sheet

Product Features

1. Self‑Contained Power – No Electricity Required
Powered by a 9 HP gasoline engine, the unit operates independently of mains power, making it ideal for field use, disaster sites, and remote areas without electrical supply.

2. High‑Flow Three‑Stage Compression for Efficient Filling
Rated flow 200 L/min and max pressure 350 bar. Three‑stage compression ensures progressive pressure build‑up, delivering high output for continuous cylinder filling.

3. Dual Filling Outlets – Double the Productivity
Equipped with two G5/8" filling ports, allowing simultaneous charging of two breathing cylinders, significantly reducing turnaround time in emergency operations.

4. Three Interstage Safety Valves – Reliable Protection
Each compression stage has its own safety valve, providing stage‑by‑stage overpressure protection against abnormal pressure surges.

5. Forced Oil Pump Lubrication – Extended Durability
The forced lubrication system ensures all moving parts are adequately oiled, minimizing wear and enhancing long‑term reliability.

6. Air‑Cooled Design – Adaptable to Harsh Conditions
No water‑cooling piping required. The air‑cooling system performs well in high‑temperature, dusty, or confined spaces, with simple maintenance.

7. Visual Oil Sight Glass – Easy Routine Checks
A transparent oil window allows quick inspection of oil level and condition, enabling timely top‑ups or changes to prevent damage.

• Product Applications

• Fire/rescue – SCBA refilling

• Commercial, recreational & public‑safety diving

• Confined‑space entry (tanks, pipes, shafts)

• Mine, earthquake, flood disaster relief

• Petrochemical, shipbuilding (hazardous/confined zones)

• Field operations & CBRN defense

• Outdoor adventure, mountaineering, medical first‑aid, sports pneumatics

  
  

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Why Choose Us

1. Dual‑Brand Strategy for Targeted Service
We operate under two brands – Dejue (Shanghai) Compression Machinery Co., Ltd. serves overseas markets, while Baosi Compressor (Shanghai) Co., Ltd. focuses on the Chinese domestic market. Wherever you are, we provide products that meet local standards and deliver professional, tailor‑made support.

2. In‑House R&D & Robust Manufacturing Capability
Our own factory occupies 20 mu (≈13,334 m² / 3.3 acres), equipped with standardized production workshops and a rigorous quality control system. From R&D to final assembly, every step is strictly controlled, ensuring that each machine meets the highest quality requirements.

3. Full Product Line for Diverse Needs
Our portfolio includes high‑pressure air compressors, breathing air fill pumps, fire‑fighting and diving specialty chargers, medium‑pressure blow‑molding compressors, screw compressors, natural gas compressors, nitrogen boosters, and more. Maximum working pressure reaches 50 MPa (500 bar / 7,250 psi), and maximum flow capacity is 50 m³/min (1,765 CFM). Whatever your gas compression needs, we have a solution.

4. International Standards & Proven Reliability
Designed with global engineering philosophies, our units feature advanced structures and user‑friendly operation/maintenance. Selected materials and mature processes ensure long‑term stable performance – comparable to European and American equivalents.

5. KEY ADVANTAGE: Long‑Term Spare Parts Supply & Direct Interchangeability with German Models
We guarantee long‑term availability of spare parts for all our models. More importantly, our critical components are highly interchangeable with those of mainstream German brands (such as Bauer, Boge, etc.) – they can be used as direct replacements. No more long waits for imported parts; significantly reduce downtime and maintenance costs, keeping your equipment running non‑stop.

6. Cost‑Effectiveness – Drastically Lower Total Cost of Ownership
We deliver quality on par with imported equipment while substantially reducing both initial purchase and lifecycle costs. That means a higher return on your investment.

7. Extensive Application Experience
Our products are widely used in diving breathing, fire‑fighting SCBA, leak testing, PET blow‑molding, industrial gas supply, and many other fields. With years of industry expertise, we can provide professional recommendations tailored to your specific application.

8. Flexible Collaboration & Full‑Lifecycle Support
Overseas customers benefit from the Dejue brand, offering export services and products compliant with local standards. Domestic clients rely on the Baosi brand for local technical support and flexible agency policies. From selection and delivery to after‑sales service, we accompany you every step of the way – building a long‑term partnership based on mutual success.

Choose us – not just for a machine, but for a professional, reliable, and efficient long‑term partner who grows with you.
Spare parts peace of mind, performance rivaling German quality – make your compressor assets continuously valuable.