Technical Help

2022-06-27

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;