Single-pipe steam radiators feature an innovative design that allows a single pipe to carry both hot steam outward and cooling water back to the boiler. This action is possible because of a special valve that prevents heat loss by closing when hot steam flows through the radiator, then opens as the temperature goes down. Unfortunately, this valve can get clogged by minerals and residue, eventually making your radiator less efficient and causing breakdowns that require the expertise of a skilled heating contractor. Below are a few tips for cleaning out this small but critical component.

How to Clean Your Radiator Air Valve

1. Remove the Valve

Start by turning off steam to the valve, which is usually located on the end of the radiator, opposite the air vent. The valve should screw off easily after a few turns of an open-end wrench.

2. Soak It in Vinegar

Fortunately, steam valves can usually be cleaned with some basic household supplies. All you have to do is soak the part in hot vinegar for approximately 30 minutes. If you can blow through the valve, the part is clean and ready to go. If not, soak it for another 30 minutes. If that still doesn't work, it may be time to call a heating contractor.

3. Reinstall the Valve

If your valve is working, go ahead and put it back on the radiator. Wrap Teflon® plumber’s tape around the threads three times, then screw the valve in place. Once it’s in place, turn the steam back on and watch to ensure the valve opens and closes. If not, you may need to call a heating contractor for a replacement.

With offices in New Berlin, West Allis, and Mukwonago, Donovan & Jorgenson proudly serves homeowners throughout the Minneapolis area. Whether your radiator needs routine maintenance or you require emergency repairs in the middle of the night, you can rely on their highly trained team to keep your home as comfortable as possible. Visit their website for more on their heating repair services, and follow their Twitter for more tips and advice.