Technical Helppvc butterfly valve
JKLYZX0055 Crynogenic Valve
| Fault Phenomenon | Fault cause | Methods |
| Pond overflow | 1. Pilot valve rubber gasket damaged;2. The float weld is leaking;3. The connecting rod piston is stuck by a foreign body; | 1. Replace the gasket;2. Replace the float ball;3. Removing debris; |
| Low Water Level | 1. Debris in the pilot body；2. The connecting rod piston is stuck by a foreign body； | 1. Removing debris; |
| Abnormal Noise | 1. Debris in the valve body;2. The closing speed is not reasonable | 1. Removing debris;2. Adjust needle valve opening; |
| The Disc cannot be Closed or Closed Properly | 1. Catheter rupture or leakage at its junction;2. The spring in the main valve breaks or for other reasons causes the diaphragm to break;3. Check valve failed;4. The pilot valve failed;5. Sealing surface damage;6. Debris in the valve body; | 1. Replace the catheter or tighten its connector;2. Check the spring；3. Repair or replace check valves;4. Repair or replace pilot valves;5. Replace the sealing surface;6. Removing debris; |
| Leakage at Valve Body and Bonnet Joint | Gasket damage; | Replace the new gasket; |
