Systems and methods for handling fluid for application to agricultural fields

A method of assembling a fluid handling system, the method comprising:

• connecting at least one valve to a container, the container configured to separate a fluid into a liquid and a vapor such that at least a portion of the vapor is disposed above the liquid, the at least one valve configured to release the vapor from the container;
• positioning at least one sensor within or adjacent to the container to detect a level of the liquid in the container;
• and
• communicatively connecting a controller to the at least one valve and the at least one sensor, the controller configured to control the at least one valve to release the vapor such that the liquid level is maintained at or above a desired liquid level, wherein the controller is configured to determine diagnostic data based at least in part on signals received from at least one of the at least one valve and the at least one sensor.