SCBA Breathing Apparatus Product
A firefighter self-contained breathing apparatus: a carbon-wrapped high-pressure air cylinder feeds a two-stage regulator that delivers breathable air on demand to a full-face mask, carried on a back frame and monitored by an electronic PASS distress alarm with an in-mask HUD. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
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Bill of materials
10 top-level lines · 69 rows shown · 191 parts total · indented to 3 levels| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Air Cylinder 5 parts | scba-air-cylinder | 1× | 1 | 7 | assembly |
| 1.1 | Aluminum Cylinder Liner | scba-cylinder-liner | 1× | 1 | — | part |
| 1.2 | Carbon-Fiber Overwrap | scba-carbon-overwrap | 1× | 1 | — | part |
| 1.3 | Cylinder Valve 3 parts | scba-cylinder-valve | 1× | 1 | 3 | assembly |
| 1.3.1 | Valve Body | scba-valve-body | 1× | 1 | — | part |
| 1.3.2 | Valve Hand-Wheel | scba-valve-handwheel | 1× | 1 | — | part |
| 1.3.3 | O-Ring Set | oring-set | 1× | 1 | — | part |
| 1.4 | Burst Disc | scba-burst-disc | 1× | 1 | — | part |
| 1.5 | Cylinder Pressure Gauge | scba-cylinder-gauge | 1× | 1 | — | part |
| 2 | Backframe & Harness 5 parts | scba-backframe-harness | 1× | 1 | 6 | assembly |
| 2.1 | Backplate | scba-backplate | 1× | 1 | — | part |
| 2.2 | Shoulder Strap | scba-shoulder-strap | 2× | 2 | — | part |
| 2.3 | Waist Strap & Buckle | scba-waist-strap | 1× | 1 | — | part |
| 2.4 | Cylinder Band | scba-cylinder-band | 1× | 1 | — | part |
| 2.5 | Fastener Set | fastener-set | 1× | 1 | — | part |
| 3 | First-Stage Pressure Reducer 5 parts | scba-first-stage-reducer | 1× | 1 | 5 | assembly |
| 3.1 | Reducer Body | scba-reducer-body | 1× | 1 | — | part |
| 3.2 | Reducer Piston | scba-reducer-piston | 1× | 1 | — | part |
| 3.3 | Coil Spring | coil-spring | 1× | 1 | — | part |
| 3.4 | Relief Valve | scba-relief-valve | 1× | 1 | — | part |
| 3.5 | O-Ring Set | oring-set | 1× | 1 | — | part |
| 4 | Second-Stage Demand Valve 7 parts | scba-second-stage-demand-valve | 1× | 1 | 7 | assembly |
| 4.1 | Demand Valve Body | scba-demand-valve-body | 1× | 1 | — | part |
| 4.2 | Demand Diaphragm | scba-demand-diaphragm | 1× | 1 | — | part |
| 4.3 | Coil Spring | coil-spring | 1× | 1 | — | part |
| 4.4 | Bypass / Purge Valve | scba-bypass-valve | 1× | 1 | — | part |
| 4.5 | Demand Valve Cover | scba-demand-cover | 1× | 1 | — | part |
| 4.6 | Mask Coupling | scba-mask-coupling | 1× | 1 | — | part |
| 4.7 | O-Ring Set | oring-set | 1× | 1 | — | part |
| 5 | Facepiece Mask 6 parts | scba-facepiece-mask | 1× | 1 | 63 | assembly |
| 5.1 | Mask Lens | scba-mask-lens | 1× | 1 | — | part |
| 5.2 | Silicone Face Seal | scba-face-seal | 1× | 1 | — | part |
| 5.3 | Head Harness | scba-head-harness | 1× | 1 | — | part |
| 5.4 | Exhalation Valve | scba-exhalation-valve | 1× | 1 | — | part |
| 5.5 | Voice Amplifier 4 parts | scba-voice-amp | 1× | 1 | 33 | assembly |
| 5.5.1 | Speech Diaphragm | scba-speech-diaphragm | 1× | 1 | — | part |
| 5.5.2 | Bare PCB | pcb-bare | 1× | 1 | — | part |
| 5.5.3 | Speaker | speaker | 1× | 1 | — | part |
| 5.5.4 | SMD Passive (R/C/L) | smd-passives | 30× | 30 | — | part |
| 5.6 | In-Mask HUD 4 parts | scba-hud-display | 1× | 1 | 26 | assembly |
| 5.6.1 | LCD Panel | lcd-panel | 1× | 1 | — | part |
| 5.6.2 | HUD Indicator LED | scba-hud-led | 4× | 4 | — | part |
| 5.6.3 | Bare PCB | pcb-bare | 1× | 1 | — | part |
| 5.6.4 | SMD Passive (R/C/L) | smd-passives | 20× | 20 | — | part |
| 6 | Low-Pressure Hose 3 parts | scba-low-pressure-hose | 1× | 1 | 4 | assembly |
| 6.1 | Hose Line | scba-hose-line | 1× | 1 | — | part |
| 6.2 | Quick-Connect Coupling | scba-quick-connect | 2× | 2 | — | part |
| 6.3 | O-Ring Set | oring-set | 1× | 1 | — | part |
| 7 | Medium-Pressure Hose 3 parts | scba-medium-pressure-hose | 1× | 1 | 4 | assembly |
| 7.1 | Hose Line | scba-hose-line | 1× | 1 | — | part |
| 7.2 | Quick-Connect Coupling | scba-quick-connect | 2× | 2 | — | part |
| 7.3 | O-Ring Set | oring-set | 1× | 1 | — | part |
| 8 | PASS Distress Alarm 7 parts | scba-pass-device | 1× | 1 | 91 | assembly |
| 8.1 | PASS Controller Board 4 parts | scba-pass-board | 1× | 1 | 83 | assembly |
| 8.1.1 | Bare PCB | pcb-bare | 1× | 1 | — | part |
| 8.1.2 | Microcontroller | mcu | 1× | 1 | — | part |
| 8.1.3 | Motion Sensor | scba-motion-sensor | 1× | 1 | — | part |
| 8.1.4 | SMD Passive (R/C/L) | smd-passives | 80× | 80 | — | part |
| 8.2 | Speaker | speaker | 1× | 1 | — | part |
| 8.3 | Li-ion Cell, 18650 | li-cell-18650 | 1× | 1 | — | part |
| 8.4 | Pressure Sensor | pressure-sensor | 1× | 1 | — | part |
| 8.5 | PASS Housing | scba-pass-housing | 1× | 1 | — | part |
| 8.6 | Wire Bundle | wire-bundle | 1× | 1 | — | part |
| 8.7 | Connector | connector | 3× | 3 | — | part |
| 9 | RIC/UAC Rescue Connection 3 parts | scba-ric-uac-connection | 1× | 1 | 3 | assembly |
| 9.1 | UAC Fitting | scba-uac-fitting | 1× | 1 | — | part |
| 9.2 | Low-Air Whistle | scba-low-air-whistle | 1× | 1 | — | part |
| 9.3 | O-Ring Set | oring-set | 1× | 1 | — | part |
| 10 | Fastener Set | fastener-set | 1× | 1 | — | part |
Sourcing — likely vendors
Companies that make this · indicative price $30–$1M · MOQ & lead are typical| Vendor | HQ | Specialty | MOQ | Lead time |
|---|---|---|---|---|
| rosenbauer.com ↗ | Leonding, AT | Fire apparatus | 200 units | 8–14 wks |
| 🇺🇸Oshkosh oshkoshcorp.com ↗ | Oshkosh, US | Specialty trucks (Pierce) | 200 units | 8–14 wks |
| msasafety.com ↗ | Cranberry Township, US | Safety equipment | 200 units | 8–14 wks |
| 🇩🇪Dräger draeger.com ↗ | Lübeck, DE | Safety & medical tech | 200 units | 8–14 wks |
| honeywell.com ↗ | Charlotte, US | Building & safety tech | 200 units | 8–14 wks |