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This high-purity brass automatic changeover panel provides continuous, uninterruped gas supply on installations where a reserve sylinder is used. The unit consists of two identical regulators - on delivering gas at a slightly higher pressure than its twin. When the service cylinder is empty, the unit automatically withdraws gas from the reserve cylinder, eliminating the need to shut down the system to replace empty cylidners. The indicating pressure switch gauges denote which cylinder is in use. The high-purity design and components make this system ideally suited for chromatography and laboratory gas applications.
Features
Automatic Changeover-provides uninterrupted high-purity gas supply.
Control Knob-permits safe removal of the empty cylinder while another cylinder is in use.
Convoluted Hastelloy C22 Diaphragms - provide superior leak integrity without contamination from a non-metallic liner or seal.
Indicating Pressure Switch Inlet Gauges Standard - magnetically actuated reed switch capable of operating low voltage annuciator, lights or displays switch point can be adjusted between 2% & 90% of full scale
Integral Check Valve in CGA - virtualy eliminates atmospheric contamination that occurs during cylinder change out.
Wall mount Six-Sided Enclosed Panel - protects piping, gauges & regulator bodies from direct weather removable side panels for easy field service/repair permits easy on-site installation.
Flexible Metal Pigtails - stainless steel construction provides excellent diffusion and corrosion resistance.
Outlet Gauge - 2 1/2" Nickel-Plated Brass or Stainless Steel
Filter (40-micron) - Stainless Steel Screen
Includes
This system includes integrated check valves in the CGA connections that help eliminate atmospheric contamination during cylinder change out; optional block and bleed assemblies can be installed immediately downstream of the CGA connection to futher mitigate the probablility of contamination during cylinder change outs. All systems include a six-sided mounting enclosure, pigtails, isolation valves and outlet shut-off valve.
Applications
For applications using portable cylinder banks, Airgas strongly recommends the 6-ft. pigtail option to facilitate the safe positioning of the banks in front of the manifold.
