The invention is within the field of equipment designtemperature control. Solve automaticregulator of foil ventilation. This consists offrom the tube) at one endbottom and filling hole for filling. INthe pipe is fitted with a bellows with a bellows piston.The bellows is fixed to the frontalwhich closes the other end of the tube. On the frontthe board is the guide hole for the piston movementbellows and clamped lever holder.
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