Abstract: An apparatus for controlling fluid flow, including a temperature sensitive material, having a first physical property at a first temperature and a second physical property at a second temperature, a device for controlling fluid flow, and a device for connecting the temperature sensitive material to the fluid flow control device. The connecting device may be configured so that the fluid flow control device is in a first position at the first temperature and in a second position at a second temperature. The temperature sensitive material may be aluminum wire or stainless steel wire. The temperature sensitive material may have the shape of an Archimedean spiral. The connecting device may be a motion amplifier. The first temperature may be a cryogenic temperature.