A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A container designed as a refillable cylinder with an integrated pressure regulator used to hold compressed medical oxygen (O2) under safe conditions at high pressure (e.g., 50 - 200 Bar). It is typically filled with O2 when delivered from the gas supplier and includes a built-in pressure regulator that, when activated, releases the O2 at the correct working pressure. It is available in some cylinder sizes (capacity) and colour-coded to denote O2 content. The cylinder may be made of steel, aluminium (Al) or other ferrous or non-ferrous materials. O2 is used as an essential life support gas, for anaesthesia, and for therapeutic purposes. A 1410 carry bag is included.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A container designed as a refillable cylinder with an integrated pressure regulator used to hold compressed medical oxygen (O2) under safe conditions at high pressure (e.g., 50 - 200 Bar). It is typically filled with O2 when delivered from the gas supplier and includes a built-in pressure regulator that, when activated, releases the O2 at the correct working pressure. It is available in some cylinder sizes (capacity) and colour-coded to denote O2 content. The cylinder may be made of steel, aluminium (Al) or other ferrous or non-ferrous materials. O2 is used as an essential life support gas, for anaesthesia, and for therapeutic purposes. A 1410 carry bag is included.

A container designed as a refillable cylinder with an integrated pressure regulator used to hold compressed medical oxygen (O2) under safe conditions at high pressure (e.g., 50 - 200 Bar). It is typically filled with O2 when delivered from the gas supplier and includes a built-in pressure regulator that, when activated, releases the O2 at the correct working pressure. It is available in some cylinder sizes (capacity) and colour-coded to denote O2 content. The cylinder may be made of steel, aluminium (Al) or other ferrous or non-ferrous materials. O2 is used as an essential life support gas, for anaesthesia, and for therapeutic purposes. A 1410 carry bag is included.

A container designed as a refillable cylinder with an integrated pressure regulator used to hold compressed medical oxygen (O2) under safe conditions at high pressure (e.g., 50 - 200 Bar). It is typically filled with O2 when delivered from the gas supplier and includes a built-in pressure regulator that, when activated, releases the O2 at the correct working pressure. It is available in some cylinder sizes (capacity) and colour-coded to denote O2 content. The cylinder may be made of steel, aluminium (Al) or other ferrous or non-ferrous materials. O2 is used as an essential life support gas, for anaesthesia, and for therapeutic purposes. A 1410 carry bag is included.

A container designed as a refillable cylinder with an integrated pressure regulator used to hold compressed medical oxygen (O2) under safe conditions at high pressure (e.g., 50 - 200 Bar). It is typically filled with O2 when delivered from the gas supplier and includes a built-in pressure regulator that, when activated, releases the O2 at the correct working pressure. It is available in some cylinder sizes (capacity) and colour-coded to denote O2 content. The cylinder may be made of steel, aluminium (Al) or other ferrous or non-ferrous materials. O2 is used as an essential life support gas, for anaesthesia, and for therapeutic purposes. A 1410 carry bag is included.

A container designed as a refillable cylinder with an integrated pressure regulator used to hold compressed medical oxygen (O2) under safe conditions at high pressure (e.g., 50 - 200 Bar). It is typically filled with O2 when delivered from the gas supplier and includes a built-in pressure regulator that, when activated, releases the O2 at the correct working pressure. It is available in some cylinder sizes (capacity) and colour-coded to denote O2 content. The cylinder may be made of steel, aluminium (Al) or other ferrous or non-ferrous materials. O2 is used as an essential life support gas, for anaesthesia, and for therapeutic purposes. A 1410 carry bag is included.

A container designed as a refillable cylinder with an integrated pressure regulator used to hold compressed medical oxygen (O2) under safe conditions at high pressure (e.g., 50 - 200 Bar). It is typically filled with O2 when delivered from the gas supplier and includes a built-in pressure regulator that, when activated, releases the O2 at the correct working pressure. It is available in some cylinder sizes (capacity) and colour-coded to denote O2 content. The cylinder may be made of steel, aluminium (Al) or other ferrous or non-ferrous materials. O2 is used as an essential life support gas, for anaesthesia, and for therapeutic purposes. A 1410 carry bag is included.

A container designed as a refillable cylinder with an integrated pressure regulator used to hold compressed medical oxygen (O2) under safe conditions at high pressure (e.g., 50 - 200 Bar). It is typically filled with O2 when delivered from the gas supplier and includes a built-in pressure regulator that, when activated, releases the O2 at the correct working pressure. It is available in some cylinder sizes (capacity) and colour-coded to denote O2 content. The cylinder may be made of steel, aluminium (Al) or other ferrous or non-ferrous materials. O2 is used as an essential life support gas, for anaesthesia, and for therapeutic purposes. A 1410 carry bag is included.

A container designed as a refillable cylinder with an integrated pressure regulator used to hold compressed medical oxygen (O2) under safe conditions at high pressure (e.g., 50 - 200 Bar). It is typically filled with O2 when delivered from the gas supplier and includes a built-in pressure regulator that, when activated, releases the O2 at the correct working pressure. It is available in some cylinder sizes (capacity) and colour-coded to denote O2 content. The cylinder may be made of steel, aluminium (Al) or other ferrous or non-ferrous materials. O2 is used as an essential life support gas, for anaesthesia, and for therapeutic purposes. A 1410 carry bag is included.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.

A device that is connected to an independent supply of oxygen (O2), typically an oxygen gas cylinder, and is used to regulate the high pressure of the supply to a safe working pressure which is delivered to the patient requiring oxygen therapy and ensuring that the prescribed (set/dialed) dosage of O2 is maintained at an accurate level. It acts both as a pressure reduction device and an O2 saving device. Commonly known as an oxygen conserving regulator it may be designed to provide a bolus of O2 to the patient by metering the gas over the normal inspiration/expiration phases, thus conserving it.