If you do not carefully check the valve usage and performance specifications before installing the clamp type electric butterfly valve, there may be several common faults in the clamp type electric butterfly valve, such as valve failure or slow switching action, gas leakage, and electromagnetic pilot valve malfunction.

(1) The inability or slow reversing action of clamp type electric butterfly valves is generally caused by poor lubrication, spring jamming or damage, oil stains or impurities jamming the sliding parts, and other reasons. For this, it is necessary to first check whether the oil mist device is working properly; Is the viscosity of the lubricating oil appropriate. If necessary, the lubricating oil should be replaced, the sliding parts of the clamp type electric butterfly valve should be cleaned, or the spring and clamp type electric butterfly valve should be replaced.

(2) After prolonged use, clamp type electric butterfly valves are prone to wear on the valve core sealing ring, damage to the valve stem and seat, resulting in gas leakage inside the valve, slow valve movement, or inability to reverse direction. At this point, the sealing ring, valve stem, and valve seat should be replaced, or the clamp type electric butterfly valve should be replaced with a new one.

(3) If the inlet and outlet holes of the electromagnetic pilot valve are blocked by debris such as oil sludge, poorly sealed, the movable iron core is stuck, or there is a fault in the circuit, it can all cause the clamp type electric butterfly valve to fail to reverse direction normally. For the first three situations, the oil sludge and impurities on the pilot valve and movable iron core should be cleaned. Circuit faults are generally divided into two categories: control circuit faults and electromagnetic coil faults.

Before checking for circuit faults, the manual knob of the clamp type electric butterfly valve should be turned a few times to see if it can change direction normally at the rated air pressure. If it can change direction normally, it is a fault in the circuit. During inspection, an instrument can be used to measure the voltage of the electromagnetic coil to see if it has reached the rated voltage. If the voltage is too low, further inspection of the power supply and associated travel switch circuit in the control circuit should be carried out.

If the clamp type electric butterfly valve cannot be reversed normally under rated voltage, the joint (plug) of the electromagnetic coil should be checked for looseness or loose contact. The method is to unplug the plug and measure the resistance of the coil. If the resistance is too high or too low, it indicates that the electromagnetic coil is damaged and should be replaced.

The newly purchased clamp type electric butterfly valve should be installed in a timely manner after opening the box. Generally, the valve manufacturer will adjust the valve before leaving the factory. Do not loosen the accessories on the valve at will. If you must check it, you need to contact the manufacturer first.