The throttle valve is a non repairable part. In case of damage or rust, it should be replaced with a new one. For the electric butterfly valve with throttle valve failure, check other relevant parts for damage, Replace if necessary.
Shanghai Dongfeng Pump Valve Factory provides: installation, requirements and instructions for electric butterfly valve of ContiTech
Do not use ContiTech electric butterfly valve beyond the recommended safe extension height
In order to extend the service life of the electric butterfly valve, please do not use the ContiTech electric butterfly valve when the compression height is lower than
Do not use ContiTech electric butterfly valve under the pressure of more than 0.7 Mpa.
Do not use ContiTech electric butterfly valve in a twisted state