What does CGA870 mean and which cylinders is this regulator compatible with?
CGA870 is the Compressed Gas Association standard designation for the pin-index post valve fitting used on portable medical oxygen cylinders (Size D, E, and similar portable medical O2 tanks). The MED-TAC Mini O2 Regulator is designed specifically for this fitting — it is compatible with any oxygen cylinder that uses a CGA870 post valve, including the MED-TAC Size D Oxygen Cylinder. This is the standard fitting for the vast majority of portable medical oxygen cylinders used in pre-hospital, EMS, and transport medicine in the United States.
What flow rates does the Mini O2 Regulator support?
The Mini O2 Regulator is adjustable from 0 to 15 LPM (liters per minute) of continuous flow. This covers all standard clinical oxygen delivery applications: 1–6 LPM for nasal cannula, 6–10 LPM for a simple face mask, and 10–15 LPM for a non-rebreather mask or BVM reservoir bag. The adjustable dial allows precise flow selection in any of these ranges from a single regulator.
Does the Mini O2 Regulator include a pressure gauge?
The MED-TAC Mini O2 Regulator includes a cylinder wrench for valve operation. Check the specific product listing for whether a pressure gauge (indicating remaining cylinder pressure/contents) is included on this model. For operational planning, providers should track oxygen cylinder usage and time based on flow rate and cylinder volume. The Size D cylinder contains approximately 415 liters; at 15 LPM this provides approximately 27 minutes of oxygen delivery.
Can this regulator be used with a bag valve mask?
Yes. The Mini O2 Regulator can supply oxygen to any device with a standard oxygen tubing barb connection — including bag valve masks with reservoir bag inlets. Setting the regulator to 10–15 LPM provides adequate flow to keep the BVM reservoir bag inflated during ventilation, enabling oxygen-enriched ventilation at approximately 85–90% FiO2 compared to room air (~21%). Connect the oxygen tubing from the regulator to the reservoir bag's oxygen inlet port.
What is the difference between a constant flow regulator and a demand valve regulator?
A constant flow regulator (like the Mini O2 Regulator) delivers oxygen at a set continuous flow rate regardless of patient breathing pattern — it flows continuously at the set LPM. A demand valve regulator delivers oxygen only when the patient inhales (on-demand), reducing oxygen consumption significantly. Constant flow regulators are standard for passive delivery devices (nasal cannula, NRB mask); demand valve regulators are used with demand valve masks for spontaneously breathing patients and conservation applications. For portable emergency use, constant flow regulators with nasal cannula or NRB masks are the standard approach.
