The Spec Master HPD6200 series two stage differential autochange control panels are designed for primary pressure gas control of non-corrosive or toxic, high purity gases up to grade 6.0 purity (99.9999%), on gas distribution systems where constant delivery pressure is required.

■ HPD6241 Series | Two Stage Twin Cylinder Piston Differential Autochange Gas Control Panel, FKM Seal
■ HPD6242 Series | Two Stage Twin Cylinder Piston Differential Autochange Gas Control Panel, EPDM Seal

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