The Spec Master HPD6240 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