Load check valve control valve
In this video explains the importance of load check valves in hydraulic systems both in heavy equipment, trucks etc. Without a load check valve, it can cause damage to the hydraulic pump or leakage of the hydraulic pump seal due to back pressure from the hydraulic cylinder.
All tools are equipped with a check valve and are usually placed after the spool conteol valve before oil is flowed into the cylinder,
When does the back pressure in the hydraulic system occur?
That is, when the attachment position of the boom is hanging or the hold or control valve is neutral then it is moved again so that the initial movement is the hydraulic pressure that exists in the system in the cylinder is higher than the pump pressure. Without a load check valve, the pump will burst or damage the seal.
Damage to the seal will later cause the oil mixing with hydraulic oil in the dumptruck.
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