Dräger PSS® Lung Demand Valve (LDV)

High-Performance Positive-Pressure Air Delivery

The Dräger PSS® Lung Demand Valve (LDV) is a critical, high-performance safety component engineered to supply breathing air directly to the user during self-contained breathing apparatus (SCBA) operations. Designed to operate on a positive-pressure system, this lung demand valve automatically activates with the wearer's first breath, maintaining a safe, continuous barrier against toxic ambient gases and airborne particles in dangerous industrial atmospheres.

Key Technical Features

• First-Breath Activation: Automatically delivers positive-pressure air upon the initial inhalation, eliminating manual override actions during critical deployment.

• Robust, Flame-Retardant Housing: Formulated from high-impact composite polymer materials that resist thermal shock, severe abrasion, and aggressive industrial chemicals.

• Dual-Action Quick Connection: Features a secure, dual-button locking mechanism that allows fast, tool-free connection and disconnection from the face mask, even with heavy utility gloves.

• Integrated Reset Button: Centrally aligned push-to-reset button allows operators to quickly shut off the air flow when removing the facepiece, conserving valuable cylinder supply.

Industrial Benefits and Applications

• Tactical Firefighting: Exceptional heat resistance safeguards breathing functionality during high-temperature flashovers and technical structural rescue missions.

• Industrial Hazardous Material (Hazmat) Response: Airtight design isolates the wearer from aggressive chemical spills, toxic vapors, and industrial gas leaks.

• Confined Space Exploration: Low-profile, streamlined silhouette reduces snagging hazards when navigating through narrow pipeline setups and industrial storage tanks.