How to Maintain a Steam Radiator | This Old House

This Old House plumbing and heating contractor Richard Trethewey shows how to silence a whistling radiator. (See below for a shopping list and tools.)

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Richard Trethewey explains how to maintain a steam radiator.

Time: Less than 1 hour
Skill level. Easy. No plumbing experience required.

 Shopping List for How to Maintain a Steam Radiator:
- new steam valve
- teflon tape
- graphite packing gasket

Tools for How to Maintain a Steam Radiator:
- screwdriver, used to remove handle from valve
- adjustable wrench, used to remove packing nut from valve

Steps:
1. Close the valve at base of radiator.
2. Turn off the room's thermostat.
3. Carefully unscrew the old air vent from side of radiator; if valve is hot, use thick cloth to protect your hand.
4. Wrap Teflon tape around the threads of the new steam valve.
5. Thread new steam valve into side of radiator; be sure valve points straight up.
6. Remove handle from valve at base of radiator.
7. Use adjustable wrench to unscrew packing nut from valve stem.
8. Wrap graphite packing gasket around threaded valve stem.
9. Replace nut and tighten with adjustable wrench.
10. Open valve at base of radiator.
11. Turn on the room's thermostat.

About Ask This Old House TV:
Homeowners have a virtual truckload of questions for us on smaller projects, and we're ready to answer. Ask This Old House solves the steady stream of home improvement problems faced by our viewers—and we make house calls! Ask This Old House features some familiar faces from This Old House, including Kevin O'Connor, general contractor Tom Silva, plumbing and heating expert Richard Trethewey, and landscape contractor Roger Cook.

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How to Maintain a Steam Radiator | This Old House
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