Dräger PSS® BG 4 plus
Contact usDräger PSS® BG 4 plus
Optimised together with our customers
We believe that our products can only fit the needs of our customers when we listen to their desires and specifications. This is why we include them in the development and design process. The modifications on the proven Dräger PSS BG 4 represents the results of practical experience, constant performance evaluations and the highest quality standards. The result is the Dräger PSS BG 4 plus. Numerous optimizations, as well as new attachments have increased its safety, longevity and ease of maintenance. The modifications can, when desired, be individually ordered or as a practical upgrade kit.
Perfectly made for long-duration deployment
The positive pressure breathing circuit protects the wearer by preventing hazardous substances from entering the sealed breathing system. Depending on the applications, the duration of use is up to four hours. A CO2 absorber removes carbon dioxide from the exhaled air. At the same time, the breathing air is enriched with oxygen from the oxygen cylinder. Before the regenerated breathing air is inhaled again, it flows through the breathing air cooler.
More breathing and working comfort
The minimum valve, which enriches the breathing air with additional oxygen upon demand, has been treated with a special coating to protect against corrosion. A redesigned clip simplifies the fastening of the valve. The area around the pressure reducer has been strengthened and additional reinforcement protects the carrying plate, providing greater stability when handling the unit complete with oxygen cylinder. To reduce the temperature of the inhaled air and minimize physical stress for the wearer, the breathing air cooler can also be filled either with ice or a re-generating cooling cartridge.
New features that make sense
Newly-developed heat protection for the breathing hose and housing are also optionally available to further reduce the temperature of the inhaled air. A T-piece with water trap can be attached to the facemask to prevent water from collecting in the flow area of the device. Any liquid discharged into the breathing circuit from the drain valve is optionally collected in an extra-absorbent fleece. The fleece is designed for single use and is easily disposed.
Breathing air cooler without ice
The cooling cartridge as an alternative to ice and can be used for a variety of applications with only three hours of recharging time necessary. The cooling cartridge can be easily exchanged and used unlimited.
Reliable CO2 absorption
The simple CO2 absorber comes complete with an integral dust filter for more operational convenience. The CO2 absorber is available as either a single use absorber or refillable cartridge. The development and production of Drägersorb® 400 soda lime along with the PSS BG 4 plus ensures the safety of the user and the long duration breathing supply.
Proven wearing comfort
The ergonomically shaped carrying plate with its lightweight harness, adjustable shoulder straps and easy to use “pull forward” waist belt provide more freedom of movement. The practical breathing hose routing across the shoulders ensures for ideal balance on the wearer’s back.
Ideal respiratory monitoring
The data captured by the Dräger Bodyguard II electronic monitoring unit can be transmitted to Dräger PSS Merlin Telemetry Boards or Merlin Modem. This telemetric monitoring and communications system displays the Bodyguard data for each of the wearers who are logged on. As a result, entry control personnel are able to view the current status of each of the device wearers and can respond immediately in case of an emergency.
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Product information: Dräger PSS® BG 4 plus (PDF)
Designed especially for tough missions: The Dräger PSS® BG 4 plus closed circuit breathing apparatus combines uncompromising safety with the highest level of breathing and carrying comfort. The postive pressure unit supplies the wearer with up to 4 hours of breathing air, even in toxic atmospheres.
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These instructions for use are provided for informational purposes only. Please always read and comply with the instructions for use delivered with the product.
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Test kit
With all adapters required for testing the Dräger PSS® BG 4 plus
Antifog Spray
Prevent fogging of visor FPS® 7000 RP
Cooling Cartridge
No ice necessary, unlimited use, reactivated after 3 hours. Placed in standard cooler
Dräger CO2 absorber
Single-use cartridge
Dräger CO2 absorber
Refillable cartridge, transparent
Dräger oxygen cylinder
With different thread connections
2 L, 200 bar
Drink container CamelBak® Pakteen
Dust filter
(200 off)
Dust sieve
Sieving the soda lime before pouring into the refillable cartridge
R 32 618
Filling station
Freezer canister cooler Dräger PSS® BG 4
To produce ice plugs
Heat protection
For breathing hoses and housing, reduces the temperature of the inhaled air when fire fighting
Isolation for Dräger PSS® BG 4
For operations with temperatures under -15°C
Merlin Radio Kit
Europe (869.5 MHz)
Merlin Radio Kit US (450 – 470 MHz)
Single Use Absorber
To catch fluid out of drain valve
R 34 633
T-piece with water trap
Prevents the collection of water in the flow area of the device connection
R 34 735
Training adapter
The new BG 4 training adapter offers a cost-effective training for the user by saving soda lime, oxygen and cleaning of the BG 4.
Transport case for cooling cartridges
Transport of up to 6 cooling cartridges
R 34 767
