VIDEO: Making the heating valve passable

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In this way you can make a heating valve workable again

It is often a result of certain ingredients in the waterwhen the heater valves get stuck. Lime plays an inglorious role here. If such problems occur frequently, you should get into the habit of opening and closing each heating valve a few times before and after the heating season, especially if they have not been used for a long time.

  1. A stuck heating valve manifests itself in the fact that the radiator no longer gets warm. The valve is operated with a plunger that can be seen when the thermostat head is removed. Set the heater the plunger is pushed in with the handwheel up to (almost) the stop.
  2. As soon as you bring the handwheel back to an operating position, a built-in spring should push the plunger out again. But if it is now shifted or soiled with a coating, the spring cannot do that. The plunger remains closed and the radiator is cold.
  3. In such a case, remove the thermostatic head with a suitable wrench or with the water pump pliers. To make it workable, spray the visible plunger with a rust-releasing agent and let it work for a few minutes.
  4. The tappet only protrudes a few millimeters from the valve body. Now try to grab this short stub as gently as possible with combination pliers and make it passable by carefully turning it while you pull it lightly.
    5. Replace the heating valve - this is how it's done

    It happens that a heating valve no longer reacts to settings and ...

  5. In most cases the jamming can be overcome and the plunger can be moved. Work on it until it can be pressed in with gentle force and then comes out again by spring force.
  6. A remainder of the rust-dissolving liquid can remain on the valve, it will not cause any damage. Now you can mount the thermostatic head, set to "5", back onto the heating valve and your radiator should work normally from now on.
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