If you do not carefully check valve usage and performance specifications before installing the Wafer Electric Butterfly Valve then the Wafer Electric Butterfly Valve may have the following common failures: Valve can not reverse or reverse slowly, gas leakage, electromagnetic pilot valve failure and so on.
1. A pair of clip-type Electric Butterfly Valve can not reverse or reverse action slowly, generally because of poor lubrication, spring is stuck or damaged, oil or impurities stuck sliding part and other reasons. In this regard, should first check whether the work of the oil mist normal; whether the viscosity of the oil is appropriate. If necessary, replace the lubricating oil, clean the sliding part of the clip type Electric Butterfly Valve, or replace the spring and the clip type Electric Butterfly Valve.
2. After a long period of use, a pair of clip-type Electric Butterfly Valve is prone to wear and tear of the spool seal ring, damage of the valve stem and seat, resulting in gas leakage in the valve, slow action of the valve or can not normally reverse, etc. . At this point, should replace the seal ring, stem and seat, or will clip-type Electric Butterfly Valve for a new.
3. If the inlet and exhaust holes of the solenoid pilot valve are blocked by mud and other sundries, the seal is not strict, the movable iron core is blocked, the circuit is faulty, etc. . For the first 3 cases should be cleaned on the pilot valve and movable iron core sludge and impurities. But the circuit fault generally divides into the control circuit fault and the electromagnetic coil fault two kinds.
4. Before checking the circuit failure, the manual knob of the Wafer Type Electric Butterfly Valve should be rotated several times to see whether the Wafer Type Electric Butterfly Valve can normally change direction under the rated air pressure. When checking, the instrument can be used to measure the voltage of the electromagnetic coil to see whether the rated voltage is reached. If the voltage is too low, the power supply in the control circuit and the related stroke switch circuit should be further checked.
If the rated voltage on the clip-type Electric Butterfly Valve can not normally reverse, should check whether the electromagnetic coil connector plug loose or contact is not true. Pull the plug and measure the resistance of the coil. If the resistance is too large or too small, the coil is damaged and should be replaced.
The newly purchased double-clip Electric Butterfly Valve should be installed in time after opening the box. Generally, the valve manufacturer will adjust the valve well before it leaves the factory. Don’t loosen the accessories on the valve at will. If you must check, you need to contact the manufacturer first.
Post time: Nov-25-2021