A system including a fluid injection system configured to removably couple to a mineral extraction system, wherein the fluid injection system includes a fluid injection system controller, a flow meter system coupled to the fluid injection system controller, wherein the flow meter system is configured to measure a fluid flow of a fluid through the fluid injection system, an adjustable valve configured to control the fluid flow through the fluid injection system, and a non-return valve configured to block reverse flow of the fluid through the fluid injection system, wherein the fluid injection system controller, the flow meter system, the adjustable valve, and the non-return valve are coupled to a common housing.