Draeger PAS Lite SCBA Chassis 3357774 3357784

Draeger PAS Lite Self-Contained Breathing Apparatus (SCBA)

The Draeger PAS Lite (MPN: 3357774 / 3357784) from a world leader in respiratory protection is a life safety engineering milestone in industrial and maritime. This unit is specifically designed without a cylinder and mask as a high-fidelity base chassis for custom-configured respiratory combinations. It is designed to help reduce physical tiredness when working in Immediately Dangerous to Life or Health (IDLH) conditions and is an important tool for vessel damage control, industrial facility turnarounds and hazardous material response teams.

The PAS Lite is constructed from a high-strength carbon-composite space frame for optimal weight distribution throughout the lumbar area. This configuration greatly reduces the cardiorespiratory and thermoregulatory burden often associated with heavy duty open-circuit breathing equipment (Love et al., 2024). This model is 03/23 dated for fresh component life and rigorous compliance with modern international life safety requirements.

Model Details:

• Brand Name: Draeger (Draeger)
• Product Category: Self-Contained Breathing Apparatus (SCBA) Components
• Manufacturer Part Numbers: 3357774 / 3357784
• Configuration Variant: Chassis Assembly Only
• Manufacturing Date: March 2023 (MAN 03/23)

Features: Draeger PAS Lite SCBA 3357774

1. Advanced Ergonomic Carbon-Composite Spine: The backplate is contoured to a precise anatomical template which transfers the bulk of the system load to the hips, substantially reducing the shoulder muscular effort needed for extended search and rescue missions.
2. Monolithic Hose Integration: The high pressure gauge supply line and medium pressure lung demand valve (LDV) lines are fully integrated directly into the channels of the impact resistant backplate avoiding snag dangers in limited or collapsed overhead structural areas.
3. High-Endurance Anti-Static Harness: The harness is made of special woven aramid fibres that resist chemical damage, wear, and intense heat while staying anti-static in explosive gas atmospheres.
4. Balanced First Stage Pressure Reducing Valve: Benefits from Draeger’s solid fail-safe pressure reduction module that is able to cope with varying cylinder pressures between 200 and 300 bar, providing a very constant, low resistance intermediate pressure to the user.
5. Universal Compatibility Matrix: The core system is a flexible basis, compatible with regular Draeger positive-pressure lung demand valves, Panorama Nova or FPS 7000 full face masks, and a wide range of steel or carbon fibre composite breathing cylinders .

Applications

• Marine Damage Control & Firefighting is a must for onboard Emergency Response Teams (ERT) when facing structural machinery space fires, toxic bunker fuel leakages or access into cargo holds as required by SOLAS.
• Confined Space Entry (CSE): Designed for entry into high-risk, non-ventilated technical spaces such as industrial storage vessels, ballast tanks, cofferdams and underground municipal wastewater utility pipelines.
• Petrochemical Refineries & Turnarounds: Provides emergency standby respiratory infrastructure for line breaks, toxic chemical handling areas and volatile organic compound (VOC) processing units.
• Smoke Chamber & Training Facilities: The appropriate low-maintenance workhorse chassis for continual staff training profiles within live-fire simulations and claustrophobic smoke house obstacle courses (Saleta et al., 2024).

Guide from NDMarineTech

1. The Dynamic Fit Requirement Positive-pressure demand masks must be fit tested (quantitative or qualitative) on a frequent basis to ensure proper safety in IDLH zones (Noonan, 2006). Never mix facepieces from different manufacturers with Draeger demand valves, because a slight difference in dimensions might result in a facepiece seal failure, with potentially disastrous results, such as gas bypass or leakage.
2. Pneumatic O-Ring Maintenance: Visually check the high-pressure EPDM O-ring each time you dismount or remount cylinders on the backplate hand-wheel connector. High ambient salinity in maritime situations can accelerate salt crystallisation inside the threads, shredding seal components and generating a gradual high-pressure leak. Keep a supply of specialised silicone grease on available for these seals.
3. Residual pressure management Always isolate the cylinder valve entirely and vent residual line pressure through the bypass button on the lung demand valve, after testing or use and before attempting to unthread the cylinder connection. If you attempt to attach an unthreaded cylinder with a line pressure of 300 bar, the internal reducer threads could be damaged instantaneously.