Patent ID: 8801287

Claim:
Protective device for a draining valve fitted to the bags intended for the transport and handling of liquid or quasi-liquid substances, said device being formed by a sheet of flexible material folded on itself, two parallel lateral edges of said sheet being fixed to one another on at least a part of their length so as to form a substantially rectangular envelope open on only one of its sides, to form an introduction side, into which a reinforcing panel will be disposed on a side of the bag provided with the draining valve is inserted, said panel having a thickness and being provided with a hole permitting passage of said draining valve, wherein the envelope has at least one opening on at least one of its front side its rear side permitting the passage of the draining valve and at least one closed compartment containing flexible material, said compartment creating an over-thickness on the surface of the envelope, so that the sum of and is at least substantially equal to a height of the draining valve.