Flow control system

An instrument comprising:

• an outer nosecone having an outer nosecone distal end and an outer nosecone proximal end;
• a first aperture of the outer nosecone;
• an inner nosecone having an inner nosecone distal end and an inner nosecone proximal end, the inner nosecone disposed within the outer nosecone wherein the inner nosecone proximal end extends from the outer nosecone proximal end;
• a gasket having a gasket distal end and a gasket proximal end, the gasket disposed over a portion of the outer nosecone;
• a first gasket aperture of the gasket;
• a control aperture seal of the gasket;
• a flow control mechanism having a flow control mechanism distal end and a flow control mechanism proximal end, the flow control mechanism disposed over the gasket and the outer nosecone wherein the flow mechanism is configured to rotate about the gasket;
• and
• a control aperture of the flow control mechanism.