Tangye pumps are ideal when no power source is available. Hydrapak pumps are invaluable as a backup system. Tangye supports and supplies Hydrapak pumps, Hydraclaw, Hydramite, and Hydralite hydraulic jacks. Check the complete range of Tangye products: https://www.hi-press.co.uk/tangye-hydraulic-equipment/tangye-hydrapak-hydrauilc-pumps/