The Tech Master GPD4200 series two stage differential autochange control panels are designed for primary pressure gas control of non-corrosive or toxic, technical gases up to grade 4.5 purity (99.995%), on gas distribution systems where constant delivery pressure is required.

■ GPD4241 Series | Two Stage Twin Cylinder Piston Differential Autochange Gas Control Panel, FKM Seal
■ GPD4242 Series | Two Stage Twin Cylinder Piston Differential Autochange Gas Control Panel, EPDM Seal

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