Draper Radiator Keys - Brass

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This guide is for homeowners and DIY enthusiasts who need to bleed their radiators. Draper Radiator Keys offer a simple and effective way to remove trapped air, improving heating efficiency. Note that these keys are designed for standard radiator bleed screws and may not fit all models.
| Model Part Number | 73965 |
|---|---|
| Brand | Draper |
If your radiator is cold at the top and warm at the bottom, it likely has trapped air and needs bleeding.
Insert the key into the bleed screw and slowly turn it counter-clockwise until you hear a hissing sound. Once water starts to come out, close the valve.
It depends on your system, but typically once or twice a year, or when you notice cold spots in your radiators.
Once water comes out, close the valve. This indicates that all the air has been released.
Yes, avoid overtightening. Just tighten it enough to stop any water leaks.
The bleed screw is usually located on the top or side of the radiator.
You can purchase replacement keys, as they are a standard size.
No, they are suitable for standard square bleed screws. Check your radiator's bleed screw before using this key.
Check the shape and size of the bleed screw. Draper Radiator Keys are designed for square openings. If the screw is a different shape, this key will not work.
Apply gentle pressure. If the screw is stuck, try using a penetrating oil or lubricant. Do not force the key, as you could damage the valve.
Setup: Simply take the key out of the package, and it is ready to use.
Compatibility: The Draper Radiator Keys are designed for use with most domestic radiators that have standard square bleed screws.
Care: After use, wipe the key clean and store it in a safe place. Avoid excessive force when turning the key to prevent damage to the bleed screw.