On hot-water radiators, tape off the control valve and the air bleeder valve (located near the top of the unit) On two-pipe steam radiators, cover the steam vent valve near the top of the unit On ...

In a typical steam heat system, a single pipe extends from the boiler to the radiators. At the point where the pipe connects to a radiator, you’ll find an intake valve. This component performs ...

A fresh coat of paint can turn back the clock on a hot-water or steam cast-iron radiator ... Step 2: Turn off the radiator, and cover vents and valves. If your radiator is non-operational ...