Dräger PSS® BG 4 plus — closed-circuit rebreather (up to 4 hours)

The Dräger PSS® BG 4 plus is a closed-circuit (regenerative) breathing apparatus running on compressed oxygen, designed for long-duration, demanding operations — primarily mine rescue and tunnel work. Exhaled air is scrubbed of CO₂ in an absorber and enriched with oxygen, so a single unit provides up to around 4 hours of protection. Cooling of the inhaled air, an ergonomic carrying system and clear monitoring electronics (pressure, remaining time) enhance comfort and safety during extended operations.

Note: A rebreather requires training, strict operating procedures and servicing (absorber, oxygen, test routines). Protection time depends on workload and conditions. We tailor the configuration and service support to your unit.

Key features

• Closed circuit on compressed oxygen — very long operating time (up to ~4 h).
• CO₂ absorber and oxygen enrichment of the exhaled air.
• Cooling of inhaled air — comfort during long operations.
• Electronics monitoring pressure and remaining time.
• Ergonomic carrying system — balanced weight distribution.
• For mine rescue, tunnels and long-duration work (EN 145).

Technical specification

Applications

Mine rescue, work in tunnels and long galleries, operations requiring several hours of respiratory protection in an atmosphere unfit for breathing.

Frequently asked questions (FAQ)

How does a rebreather differ from a cylinder SCBA?

A rebreather (closed circuit) recovers and re-enriches the air with oxygen, delivering a far longer operating time than a conventional compressed-air SCBA.

How long does the PSS BG 4 plus last?

Up to around 4 hours — depending on physical exertion and working conditions.

Does it require special servicing?

Yes — handling the CO₂ absorber and oxygen, plus periodic testing, requires training and proper service facilities.

Brand and service

Dräger — SafeTech supplies, configures and services Dräger respiratory protection equipment: selection, periodic inspections, cylinder pressure testing and maintenance in one place.

Why SafeTech

• 23 years of experience in safety and gas detection (in business since 2003).
• Distributor and authorised service station — including Honeywell; Dräger products in our range.
• In-house service, inspections, pressure testing and maintenance in Suchy Dwór near Gdynia — serving all of Poland.
• Training and technical support (SafeTech Safety Academy).

Availability and service — Gdynia and the Tri-City

Dräger PSS® BG 4 plus — closed-circuit rebreather (up to 4 hours) — sales, selection, calibration and service in Gdynia (Suchy Dwór, on the border of Gdynia and the Kosakowo municipality). We serve the Tri-City (Gdańsk, Sopot, Gdynia), Rumia, Reda, Wejherowo, the Pomeranian Voivodeship and all of Poland. Ask us for a quote and availability.