Safety spout for bottles of drain unblocker comprises large diameter upper tube with flange which fits on lip of bottle and lower section of smaller diameter which fits into neck of bottle and has holes preventing air entering bottle

摘要

The safety spout for bottles (8) of drain unblocker comprises a large diameter upper tube (10) with a flange (6) at the top which fits on the lip of the bottle. A lower section of smaller diameter (9) fits into the neck (7) of the bottle and has holes (3) which prevent air entering the bottle and hence liquid leaving it unless its neck is squeezed.