Vaillant water filling valve key

I designed this key when the original one did not worked anymore because of the valve was stuck and the original key inner shape went rounded. If you want to use this key, then first you need to unblock and clean the valve of your Vaillant boiler. Otherwise the new key may fail like the old one. As a difference from original key, this is like lever for more force. I added also arrows with open and closed directions and the Vaillant logo is added as a fancy feature.

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