the valve counterclockwise until water starts dripping out.
if you have a hot-water heat radiator that’s not heating the cause is usually trapped air, and getting rid of it is simple. at the top of your radiator, look for a small valve like the one shown in photo 1. use a radiator key, 1/4-in. 12-point socket, or a flat screwdriver (depending on your valve type) and slowly turn the valve counterclockwise until water starts dripping out. this will release trapped air and let hot water into the cold fins. while you’re at it, you should repeat the process with your other radiators. bleeding the radiators will lower the pressure in your 