A cylinder without a regulator and without a fill is a paperweight. Buy the three pieces together or you will find out on a call.
D Cylinder Oxygen Duration Chart
How long a D cylinder lasts at the flow rates you actually run, by what the gauge reads. Every figure keeps a 200 psi safe residual in the tank and is rounded down, so the clock runs out before the oxygen does.
| Gauge | Usable O₂ | 2 L/min | 4 L/min | 6 L/min | 10 L/min | 15 L/min |
|---|---|---|---|---|---|---|
| 2,000 psi | 288 L | 144 min | 72 min | 48 min | 28 min | 19 min |
| 1,500 psi | 208 L | 104 min | 52 min | 34 min | 20 min | 13 min |
| 1,000 psi | 128 L | 64 min | 32 min | 21 min | 12 min | 8 min |
| 500 psi | 48 L | 24 min | 12 min | 8 min | 4 min | 3 min |
Minutes = (gauge psi − 200) × 0.16 ÷ flow in L/min
Example: gauge reads 1,200 psi, non-rebreather at 15 L/min → (1,200 − 200) × 0.16 ÷ 15 = 10.7 → call it 10 minutes.
- Nasal cannula: 1–6 L/min
- Simple face mask: 6–10 L/min
- Non-rebreather mask: 10–15 L/min, enough to keep the reservoir bag inflated
- Bag-valve mask with reservoir: 15 L/min
The 0.16 factor is the standard EMS planning figure for a D cylinder and is deliberately conservative. A fully filled 14.6 cu ft cylinder can hold more than the top row shows, but plan from what your gauge reads, not from the label. Flow rate and oxygen targets are set by your protocol and medical direction.
One cylinder per package. No size or configuration options on this listing — the D size is the only format sold here.

Specifications coming soon. Contact us for detailed product information.
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Order Processing & Tracking
Standard Gear: In-stock medical devices, consumables, and tactical packs process within 48 hours.
Stocked Kit Bags: Custom-built kits ship within 7-10 days as they are assembled by hand at our South Florida facility.
Automated carrier tracking details are emailed immediately upon shipment dispatch.
30-Day Returns & Medical Safety
Returns: Unused, unopened equipment in original manufacturer packaging is eligible for return within 30 days of delivery.
Bio-Safety Notice: To ensure sterility and patient safety, medical consumables with opened or broken tamper-evident seals cannot be returned.
Return Facility: MED-TAC International Corp., 15757 Pines Blvd, Suite 154, Pembroke Pines, FL 33027.
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