Where is drain-cock on radiator?

The drain cock on a radiator is typically located at the bottom of one end of the radiator. It is a small valve that allows for the draining of water from the radiator for maintenance or to remove air from the system. Depending on the radiator design, it may be positioned on the side or at the bottom, often covered by a cap or handle that needs to be turned or unscrewed to access it. Always ensure the heating system is off and cooled down before attempting to use the drain cock.