For those vehicles that require two cylinders Oxylitre's range of Manual Twin Cylinder Change-Over Systems, have been designed with the end user in mind. Simple and effective our range of Manual Twin Cylinder Change-Over Systems have a long and exemplary history within the Ambulance environment, simple to use, reliable and extremely functional. The system is usually wall mounted above the cylinders the system will indicate the pipeline working pressure. When the pressure drops you simply switch the lever to the opposite cylinder, changing your empty cylinder when next convenient. Oxylitre's range of Manual Twin Cylinder Change-Over Systems are dependable, easy to maintain with a long service life with a 7 year warranty.