An Intravenous (IV) set (10) with an automatic stopping mechanism, the IV set comprising: a drip chamber (12) comprising a cap (34) with a piercing means (18) extending radially outwards for puncturing a container or bottle of intravenous fluid wherein a proximal end (22) of the drip chamber (12) is connected to a joint (40) wherein the joint (40) is connected to a flexible reservoir (38) which is connected to a flexible tube (46) ending in a valve (48) to be connected to a catheter or the like wherein the drip chamber (12) is provided with at least two chambers comprising a flexible chamber (14) and a rigid chamber (16) connected in between by a connecting means (18) defining an opening or a passage (20) for the fluid wherein a flow regulating and stopping member (32) arranged inside the rigid chamber (16) for automatic control of flow of fluid through drip chamber (12 comprising a lower part (54), a middle part (56) and an upper part (58) wherein the middle part (56) and lower part (54) are connected by a flexible stud (60), the flexible stud (60) being a part of the lower part (54) and wherein the outer diameter of the flow regulating and stopping member (32) is greater than the inner diameter of the connecting means (18) restricting the entry of the flow regulating and stopping member (32) in the flexible chamber (14) of the said drip chamber (12). (Fig. 1)
