METHOD AND APPARATUS FOR REDUCING FREE FLOW RISK

摘要

A technique for reducing the risk of free flow through a pump 102 is disclosed. The technique includes sensing a pressure difference between the pump inlet 110 and outlet 112. The pressure difference is mechanically communicated to a flow restricting element 106. The flow restricting element 106 increases resistance to flow exiting the pump outlet 112 in relation to the pressure difference present between the pump inlet 110 and pump outlet 112.