Fault and maintenance of the clamp electric butterfly valve

 If you do not carefully check the valve usage and performance specifications before installing the wafer type electric butterfly valve, then the clip type electric butterfly valve may have the following common faults: the valve cannot be reversed or the reversing action is slow, gas leakage, electromagnetic The pilot valve is faulty.
    (1) The wafer type electric butterfly valve can not be reversed or the reversing action is slow, generally caused by poor lubrication, spring jam or damage, oil stain or impurities stuck to the sliding part. In this regard, first check whether the oil mister is working properly; whether the viscosity of the lubricating oil is appropriate. If necessary, replace the lubricating oil, clean the sliding part of the clip-on electric butterfly valve, or replace the spring and the wafer type electric butterfly valve.
    (2) After the long-term use of the clip-on electric butterfly valve, the phenomenon that the valve core seal is worn, the valve stem and the valve seat are damaged, the gas leakage inside the valve, the valve movement is slow or the normal commutation is not possible. In this case, replace the seal, stem and seat, or replace the clip-on electric butterfly valve.
    (3) If the inlet and exhaust holes of the electromagnetic pilot valve are blocked by oil and other debris, the sealing is not strict, the movable iron core is stuck, the circuit is faulty, etc., and the clamp type electric butterfly valve cannot be normally reversed. For the first three cases, the sludge and impurities on the pilot valve and the moving iron core should be cleaned. Circuit faults are generally divided into two types: control circuit faults and electromagnetic coil faults.
    Before checking the circuit fault, the manual knob of the clip type electric butterfly valve should be rotated a few times to see if the wafer type electric butterfly valve can be normally reversed under the rated air pressure. If the normal commutation is possible, the circuit is faulty. During the inspection, the voltage of the electromagnetic coil can be measured by the meter to see if the rated voltage is reached. If the voltage is too low, the power supply in the control circuit and the associated stroke switch circuit should be further checked.
    If the clamp type electric butterfly valve cannot be normally reversed at the rated voltage, check if the solenoid connector (plug) is loose or not touching. The method is to unplug the plug and measure the resistance of the coil. If the resistance is too large or too small, the solenoid is damaged and should be replaced.
    The newly purchased clip-on electric butterfly valve should be installed in time after opening the box. Generally, the valve manufacturer will debug the valve before leaving the factory. Do not loosen the accessories on the valve at random. If you must check it, you need to contact the manufacturer first.