... pres. grade:10,20,31.5M This nice small tool is the ideal accessory to fill the nitrogen for accumulator ... modelnominalpressure(Mpa)connection sizewith accumulatormatching accumulatormatching pressure gaugetube sizeweight(kg)scale rangeclassinside diameter(mm)×num. layer of the wirelength(mm) ... closed,and then open the bleed valve of charging tool to exhaust completely the gas in hose,finally,unload ...