Baode overflow valve common fault introduction

Baode BURKERT relief valve repair common fault causes
  A: 1 main valve core cone wear or not round, valve seat cone surface wear or not round; 2 cone surface there is dirt sticking; 3 cone surface and valve seat due to machining error caused by the difference; 4 main valve The core and the valve seat do not cooperate well, the main valve core is different or damaged, so that the valve core and the valve seat are not tightly matched, and the main valve gland has leakage, such as gasket damage, poor assembly, looseness of the gland screw, etc. .
  Baode BURKERT relief valve repair common troubleshooting methods:
1 Replace or repair the overflow valve body or main valve core and valve seat, 2 clean the relief valve to make it fit well or replace the defective components, 3 remove the main valve to adjust the valve core, replace the damaged gasket, eliminate leakage and make the seal good. .
  B: The pilot valve adjustment spring is bent or too short and too soft, so that the sealing of the cone valve and the valve seat is poor. For example, the cone valve and the valve seat are worn, the contact surface of the cone valve is not round, the contact surface is too wide, and it is easy to enter the dirt. , or stuck by glue. Solution: Replace the defective parts or repair the pilot valve to meet the requirements.
 C:1 The remote control port has a serious internal leakage when it is in the normally closed position; 2 the valve body and the sliding valve at the valve port are seriously worn; 3 the spool valve does not reach the correct position, resulting in insufficient oil seal length; 4 the remote control port has leakage .
Solution: 1 Repair and replace the failed parts to meet the requirements, 2 check the pipeline to eliminate leakage.
4. Sudden rise in pressure
the reason:
  A:1 Because the main valve core parts are not sensitive, they are suddenly stuck in the closed state; 2The hydraulic components processed are low in precision, the assembly quality is poor, and the oil is dirty.
  B: The valve plug of the pilot valve and the seat of the valve seat are stuck and cannot be opened, which causes the system to fail to achieve normal unloading; the spring is adjusted to bend “not strong”.
Solution: Clean the main valve body and repair the replacement parts.
5. Sudden drop in pressure
the reason:
  A: 1 main spool damping hole is suddenly blocked; 2 the main valve cover seal is suddenly damaged; 3 main spool is not sensitive, suddenly stuck in the open state, such as low machining accuracy, poor assembly quality, oil Dirty, etc.; 4 The pilot spool suddenly ruptures; the spring is suddenly broken.
 B: The remote control solenoid valve solenoid suddenly powers off and the relief valve is unloaded; the remote control port joint suddenly breaks or the pipe suddenly breaks.
Solution: 1 Clean the hydraulic valve components, if the valve components are blocked, the oil should also be filtered;
2 Replace damaged components to repair defective parts, 3 check to eliminate electrical faults.