677 Series Switchover

The 677 Series Switchover is designed to provide a continuous supply of high purity gas at high flow rates with relatively low static for optimal gas usage from the source. The 677 Series pressure differential switchover is suitable for use with high purity, non-corrosive gases such as nitrogen, argon, helium, hydrogen, methane, oxygen, or mixtures of these gases. It is available with special EPDM seats for use with carbon dioxide, nitrous oxide, and certain hydrocarbons that cannot be used with the standard FKM seats. The CONCOA 677 Series switchover may be purchased with open inlet ports or with inlet shut-off valves, with or without inlet purge valves, and with or without an integral line regulator. If constant regulated outlet pressure is required, either the integral line regulator option is required, or a regulator will need to be installed downstream after the switchover system.