If i remember correctly it should be your doctor
It is the Oxygen Regulator. The oxygen regulator appends to the chamber at the barrel valve. It diminishes the weight of compacted oxygen inside the oxygen barrel to a level more fitting for understanding consideration.
Oxygen Flow control controllers and preserving gadgets are a weight diminishing gadgets intended to direct or bring down oxygen weight from a barrel to levels that can be securely utilized by the patient. A Regulator just directs the spill out of an oxygen chamber.
Answer:
United States Environmental Protection Agency
Explanation:
