Purchase of Emergency Breathing System

Amendment 1 Attachment 2 70Z03826QE0000057 Salient Characteristics Emergency Breathing System 1.0 Complete System Assembly • Operating Depth: The complete assembly must be certified and fully functional down to a minimum depth of 6 meters (20 feet). • Total Charged Weight: The maximum weight of the fully charged system (cylinder, regulators, hose, and manifold) shall not exceed 3 lbs (1.36 kg). • Activation Mechanism: o No ON/OFF Switch: The device SHALL NOT have an ON/OFF switch, knob, or manual isolation valve. o Always-Ready State: The system must remain in an "always-on," pressurized, and ready- to-breathe state once the cylinder is charged. This is a critical safety requirement to eliminate the risk of an aircrew member failing to open a valve during an emergency egress, or the system being inadvertently turned off. 1.1. Cylinder Specifications • Material: Seamless, high-strength aluminum construction. • Finish: Fully anodized exterior surface for maximum corrosion resistance in marine and saltwater environments. • Capacity: Minimum internal volume of 1.5 cubic feet of compressed air. • Operating Pressure: Rated for a fill/charge pressure of 3000 PSI (207 BAR). • Dimensional Limits: The overall length of the cylinder and first-stage regulator assembly must not exceed 10 inches (254 mm) to ensure proper fit and retention inside the standard USCG Aircrew R/W vest emergency breathing bottle pocket. 1.2. First-Stage Regulator • Design: Piston-type first-stage regulator. • Range of Motion: Must feature a 360-degree swivel configuration to allow optimal hose routing and prevent kinking. • Pressure Indicator: Integrated, easy-to-read dial pressure gauge indicating 0 to 3000 PSI (0 to 207 BAR). • Safety Features: Equipped with an over-pressure relief safety plug. • First-Stage Regulator Port Connection: 3/8"-24 UNF (Standard low-pressure port; male straight thread with an O-ring seal). • Fitting Type: No custom threads or proprietary quick-disconnect fittings. • Cylinder Neck Thread: 5/8"-18 UNF (Standard North American straight thread with a face O- ring seal). • Fitting Type: Straight-thread O-ring boss interface compliant with DOT/TC high-pressure seamless aluminum cylinder standards. -- 1 of 2 -- Amendment 1 Attachment 2 70Z03826QE0000057 1.3. Flexible Hose • Material: Lightweight, high-flexibility outer braid made of polyester, containing a robust polyurethane core. • Available Lengths: To accommodate various aircrew configurations and vest sizes, the contractor must offer the system with two distinct hose lengths: o 20 inches (508 mm) o 27 inches (686 mm) 1.4. Second-Stage Regulator • Profile: Low-profile design to minimize bulk and snag hazards on the survival vest. • Swivel: Must feature a swivel attachment to the hose to ensure freedom of head movement. • Purge Protection Cover: o Design Requirement: The regulator must be configured with a rigid, injection-molded hard "Purge Protection Cover." o Functional Requirement: The cover must completely shroud/protect the purge button so it cannot be depressed or activated during storage, handling, or routine flight operations. o Justification: This design is critical to prevent the purge valve from being accidentally pressed against survival vest gear, which would lead to the inadvertent depletion of the compressed air supply. o Dimensional Limit: The second-stage regulator, including the purge cover, shall not exceed a maximum circular diameter of 2-1/4 inches (57.15 mm) and an overall length of 2-3/4 inches (69.85 mm) to ensure compatibility and non-interference with the R/W survival vest. • Second-Stage Regulator Connection: 9/16"-18 UNF (Standard second-stage demand valve inlet; female swivel nut). • Fitting Type: No custom threads or proprietary quick-disconnect fittings. 2.0 Support Requirements • The contractor must possess the capability to customize hose lengths or regulator configurations if operational needs change. • The contractor must provide access to factory-certified overhaul and maintenance services for both the 1st and 2nd-stage regulators, in compliance with manufacturer-specified service intervals. • Interested vendors must provide documentation demonstrating compliance with all physical dimensions (specifically fitting within the 10-inch cylinder pocket and the 2-1/4 inch regulator limit). • Evidence of depth certifications down to 6 meters (20 feet). • Confirmation of the "always-on" (no switch) architecture and the integration of the non-depleting Purge Protection Cover. -- 2 of 2 --