Pilot valve controlled positive and negative pressure relief valves

A fuel tank, comprising:

• a relief valve that includes a valve body, the valve body being positioned within an interior space of the fuel tank and including a valve compartment being configured to provide a fluid pathway between the interior space of the fuel tank and an exterior space, the valve compartment comprising:
• a primary valve poppet located within the valve compartment;
• a poppet shaft connected to the primary valve poppet, at least a portion of the poppet shaft passing through a poppet shaft bore annulus, the poppet shaft bore annulus being configured to allow fluid flow between the interior space and the valve compartment;
• and
• a pilot valve located in an opening into the valve compartment and within the interior space of the fuel tank such that one end of the pilot valve abuts the valve compartment and an opposing end of the pilot valve abuts the interior space of the fuel tank, a further opening into an ambient pressure sense line between the pilot valve and the exterior space,
• wherein the relief valve is configured to at least partially relieve a positive and a negative pressure differential between the interior space and the exterior space.