Valve introducer useful for inserting catheters or endoscopic cameras in a humid environment where there is a flow of water that must not escape from the system. The Valve_1 component screws together with the Valve_2 component; the Valve_Mould component is to be inserted inside the Valve_2 component and it is to be printed in silicone material, moldable and soft: by screwing the two parts (Valve_1 and Valve_2) the Valve_Mould component compresses and the central orifice tightens, making the through tube adhere. Very useful for fluid dynamics engineering applications.ISO thread.