Spectra Gases 7900 and 7910 semi-automatic changeover system is designed to allow the user to replace expended gas cylinders while maintaining a continuous gas supply to the point of use.

The changeover regulator is made of high quality materials and cleaned for high purity service. When adjusting the selection knob on the face of the system, the variable regulator pressure is change from one side of the fixed pressure to the other. The low and high pressures are set at equal values on eitehr side of the fixed regulator, resulting in a swapping of the source gases from on-line to standby whenever the control knob is rotated.

Features:

• Line regulator
• Relief valve
• Flexible hose assembly
• Pressure gauges
• Outlet valve(s)
• Inlet valves
• Pressure switches (optional)
• Purge capability
• Pigtail provided