Medical Oxygen Flowmeter with Humidifier Bottle – Adjustable Flow Rate

This Medical Oxygen Flowmeter with Humidifier Bottle is an essential device for precise oxygen delivery in hospitals, clinics, and home care settings. It combines a high-accuracy flow meter with a built-in humidifier to ensure patients receive oxygen that is both accurately dosed and comfortably moist.

Category

Specification：

1.High Precision Flow Control: The clear, graduated tube allows you to easily adjust and monitor oxygen flow from 0 to 15 L/min, ensuring reliable and consistent delivery.
2.Integrated Humidification System: The transparent humidifier bottle adds moisture to dry oxygen, reducing irritation to the nasal passages and throat for better patient comfort. It features clear “Upper Level” and “Lower Level” markings for easy water level monitoring.
3.Durable & Reliable Construction: The aluminum alloy body and medical-grade acrylic components are built to withstand frequent use, while the precision valve ensures smooth, leak-free operation.
4.Universal Compatibility: Designed with a standard quick-connect fitting, it works seamlessly with most oxygen supply systems, including wall outlets and concentrators.
5.Safety Certified: Complies with international medical device standards (CE/FDA compliant), ensuring safe performance for both patients and healthcare providers.
FAQ：

Installing：

Q1: What preparations need to be made before installing oxygen regulator?

Environmental inspection: Ensure that the operating environment is well ventilated, free of open flames, heat sources, and kept away from grease and flammable materials (“four oxygen protections”: oil, fire, heat, and earthquake prevention).

Personnel preparation: the operator needs to wash his hands to ensure that there is no oil stain, cosmetics or alcohol gel on his hands (to be completely volatilized).

 

Equipment inspection: Check whether the oxygen cylinder is within the valid inspection period (check the steel seal), and whether the cylinder body is severely corroded or damaged. Check whether the appearance of the pressure reducer is intact, free of oil stains, whether the pressure gauge pointer is reset to zero, and whether the threads of each interface are intact.

Check the components: prepare the pressure reducer, suitable sealing gasket (usually brass or PTFE gasket), and special wrench.

 

Q3: How to prepare the oxygen cylinder valve before installation?

Place the oxygen cylinder firmly upright to prevent tipping over.

Facing the bottle valve outlet, quickly open and close the valve for 1-2 seconds (“blowing dust” operation). The purpose is to use high-pressure oxygen to blow out dust or foreign objects that may exist at the valve port. It is strictly prohibited to aim at people or mechanical equipment during this operation process.

 

Q4: How to install an oxygen regulator correctly?

Connect the pressure reducer: Place a clean and complete specialized sealing gasket into the intake port groove of the pressure reducer. Align the inlet of the pressure reducer with the outlet of the bottle valve by hand, tighten it preliminarily, and ensure that it is aligned with the correct thread.

Manual pre tightening: Continue to rotate the nut by hand until significant resistance is felt, ensuring smooth thread engagement without tilting.

Tool tightening: Use a specialized fixed wrench (it is strictly prohibited to use a flexible wrench/adjustable wrench to avoid slipping or damaging the nut) to gently tighten. Avoid excessive force to prevent thread slippage. Usually, after tightening by hand, apply a slight force of about 30 degrees.

Check connection: After installation, check whether the pressure reducer and bottle valve are coaxial and stable.

 

Q5: After installation, how to turn on oxygen and adjust flow rate?

Slowly open the bottle valve counterclockwise until it is fully opened. At this time, the pointer of the high-pressure gauge will rise, indicating the pressure of the gas stored in the cylinder.

Check for leaks: Apply soapy water or specialized leak detector to all interfaces (bottle valve and pressure regulator interface, pressure regulator outlet and flow meter/pipeline interface), and observe for the formation of bubbles. It is strictly prohibited to use open flames for leak detection!

Adjust flow rate: Rotate the flow adjustment knob on the pressure reducer clockwise, observe the low pressure gauge or float flowmeter, and adjust the output pressure or flow rate to the value required by the doctor’s order.

Connect the humidification bottle to the oxygen tube: Connect the humidification bottle with sterile distilled water added to the outlet of the pressure reducer, and then connect the oxygen tube to the humidification bottle.

 

Q6: What safety precautions should be taken during the use of oxygen pressure reducers?

Observe the pressure on the high-pressure gauge at all times. When the pressure drops to 0.5MPa (about 5kg force) or 0.2MPa, prepare to replace the gas cylinder in advance to prevent interruption of oxygen supply.

Ensure that all pipelines are unobstructed, without any bends, and that the bubbles in the humidification bottle are evenly distributed.

If the device makes abnormal noises, vibrates violently, or smells strange, the bottle valve should be immediately closed and the use should be stopped.

 

Q7: How to determine if the pressure regulator is leaking?

Listen: In a quiet environment, listen for a “hissing” airflow sound near the interface.

Watch/Test: Regularly check the interface with leak detector. After turning off the flow switch, if the pressure on the low-pressure gauge continues to slowly decrease for a long time (such as 1 hour), it may indicate internal leakage.