APPLICATIONS - Ideally suited to insure gas supply from many high-pressure sources of high purity non-corrosive gases with low flow - Dedicated to the supply of gas to analyzers and to the creation of controlled atmosphere in laboratories, control units, and for petrochemical applications. KEY FEATURES - Possible to manage 4 gas cylinders without any extension and a gas for purging operation (up to 6 cylinders without any extension - without using the purge line). - No risk that a source flows into the other one. - Exists in a MANUAL, SEMI-AUTOMATIC and AUTOMATIC version. - The automatic switch over board does not need to be reset to allow reversal of the cycle. - Ready to install due with all components pre-mounted on a board. - Can be equipped with a collection tube on the relief valve and purge outlet. - Can be equipped with an outlet shut-off valve. - Using contact gauges, the switch over board can also be equipped with an alarm box to indicate the source status.