For safe refilling of SF6 gas into gas compartments by overpressure The handy device allows filling of electrical equipment with SF6 gas directly from the cylinder by overpressure. The primary gauge of the pressure reducer displays the cylinder pressure in bar, psi and kPa. The secondary gauge indicates the desired filling pressure to be set easily by means of the handle. The cylinder pressure can be reduced to the desired filling pressure by the integrated pressure reducer. The use of gastight and selfclosing DILO couplings guarantees emission-free gas handling during the refilling process.