Embodiments disclosed herein relate to systems and methods for transferring fluids. A fluid pathway can extend between a first fluid container and a second fluid container. An air chamber can be in fluid communication with the fluid pathway between the first fluid container and the second fluid container. During normal operating pressures, air can be maintained in the air chamber. During low pressure conditions (e.g., caused by a malfunction), the air in the air chamber can expand to a sensing location (e.g., in the fluid pathway). An air sensor can detect the presence of the air at the sensing location, and can provide an indication of a possible low pressure condition.
