Changes

====Cylinder Manifold====

====Cylinder Manifold====

*Commonly found in larger veterinary hospitals for both oxygen and nitrous oxide.

*Commonly found in larger veterinary hospitals for both oxygen and nitrous oxide.

*There is a pressure sensitive device that detects when the cylinders are nearly emppty allowing automatic switch over from 'duty' to 'standby' cylinders, as well as sounding an alarm.

*There is a pressure sensitive device that detects when the cylinders are nearly empty allowing automatic switch over from 'duty' to 'standby' cylinders, as well as sounding an alarm.

*Only trained staff should be allowed to change the cylinders and a logbook kept.

*Only trained staff should be allowed to change the cylinders and a logbook kept.

*Total capacity of the bank should be based on 1 week's supply of gas, with a minimum of 2 days' supply on each bank and 3 days on spare cylinders.

*Total capacity of the bank should be based on 1 week's supply of gas, with a minimum of 2 days' supply on each bank and 3 days on spare cylinders.

====Liquid Oxygen Storage====

====Liquid Oxygen Storage====

*This is used when the annual consumption of oxygen by a veterinary hospital is too great for a cylinder manifold.

*This is used when the annual consumption of oxygen by a veterinary hospital is too great for a cylinder manifold.

*Advantages includes no need for manual handling and connection of cylinders, pressure regulator present and a safety valve to allow gas escape during periods of low demand.  

*Advantages include no need for manual handling and connection of cylinders, pressure regulator present and a safety valve to allow gas escape during periods of low demand.  

====Oxygen Concentrators====

====Oxygen Concentrators====

==Pressure Reducing Valves==

==Pressure Reducing Valves==

Pressure reducing valves (or pressure regulators) are used to reduced the pressures of the gases being delivered from the cylinder as well as maintaining a constant reduced pressure as the cylinder starts to run low. Machines using cylinders have a reducing valve for each cylinder while pipeline supplies have a regulator at the source. Pressure relief valves are found downstream allowing the escape of gas if the reducing valve is to fail. The final pressure reduction is carried about by control valves which regulate gas flow into the flowmeters via manual adjustment.

Pressure reducing valves (or pressure regulators) are used to reduce the pressures of the gases being delivered from the cylinder as well as maintaining a constant reduced pressure as the cylinder starts to run low. Machines using cylinders have a reducing valve for each cylinder while pipeline supplies have a regulator at the source. Pressure relief valves are found downstream allowing the escape of gas if the reducing valve is to fail. The final pressure reduction is carried about by control valves which regulate gas flow into the flowmeters via manual adjustment.

==Flowmeters==

==Flowmeters==