SUPERPUMP transfer hose with valve 30L/min 19mm

SUPERPUMP is a one-way valve that can be used as a pump to transfer most liquids WITHOUT ENERGY, QUICKLY, SAFELY and without SPILLAGE. Shake the tube vigorously up/down until liquid rises in the tube, without lifting it out of liquid. Continue pumping until liquid in tube passes balance level (L). Now stop pumping action. Liquid will flow automatically!