Valve assembly for a thermal management system

A valve assembly, comprising:

• an interface component having an elongated body and a handle configured to be rotated to couple the elongated body to a thermal management system;
• and
• an engagement body having a temperature-sensitive element and an actuator that is activatable by the temperature-sensitive element responsive to a change in temperature in the thermal management system, the actuator being configured to disengage the interface component from the thermal management system once actuated by the temperature-sensitive element to dispense a working fluid in the thermal management system out of the thermal management system via the handle,
• the handle having an inner surface that defines one or more drain holes extending through the handle and positioned to allow fluid to drain out of the interface component after such fluid has entered the interface component.

A dump valve, comprising:

• a body in which a spring and a stem are located, the body including an inner surface that defines openings through which retractable projections protrude to engage internal threads of a connector of a thermal management system and retract to release from the internal threads of the connector;
• a wax body configured to change one or more of size, shape, or phase responsive to a drop in temperature to release the spring to move the stem within the body to dump a fluid in the thermal management system out via the body;
• and
• a handle coupled with the body and configured to be rotated to engage the retractable projections with the internal threads of the connector, the handle including drain openings that permit water trapped in the body to drain out of the body and avoid freezing the retractable projections in place.