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Main & Relief Valves
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Vendor: HYUNDAI
XKBF-00428 XKCG-00083 Relief Valve for Hyundai R140W-7 R210LC-7 R290LC-7 R305LC
Regular price $ 89 -
Vendor: HYUNDAI
High Quality Main Relief Valve XKBN-00486 for R110-7A
Regular price $ 89 -
Vendor: Hyundai
main valves relief valves XKBF-01291 XKBF-01292 for excavator 01291 01292
Regular price $ 89 -
Vendor: HYUNDAI
XKBF-00095 Relief Valve for R110-7 R140LC-7 Excavators
Regular price $ 78 -
Vendor: Doosan
Relief Valve K9007413 Fits for Doosan Daewoo DX220A DX225LCA DX225LC DX230LC TXC225LC-2 Excavator
Regular price $ 98 -
Vendor: Volvo
14597142 Relief Valve for Volvo EC460B EC460C EC700B EC700C PL4608 PL4611 Excavator
Regular price $ 198 -
Vendor: Volvo
Main Relief Valve VOE 14597140 for Volvo EC460B EC700B EC700C EC700CHR Excavator
Regular price $ 159 -
Vendor: Volvo
14597185 Main Relief Valve For Volvo EC360 EC460B EC460C EC700B EC700C Excavator
Regular price $ 220 -
Vendor: Hitachi
Zx330-3 9213855 Traveling Motor Relief Valve Excavator
Regular price $ 129 -
Vendor: Hitachi
New 1 pc relief valve 4228353 Fits for hitachi excavator ex200lc
Regular price $ 159 -
Vendor: Hitachi
4309832 Relief Valve Compatible with Hitachi John Deere Excavator ZAX200 EX200-5
Regular price $ 89 -
Vendor: Hitachi
Overload Relief Valve B-21113-40051 for Hitachi LX110-7 ZX350H-3
Regular price $ 89
How does a main & relief valves work?
1. The function and working principle of the excavator main gun
The main gun of the excavator is one of the main control valves in the hydraulic system of the excavator. It mainly controls the working pressure and flow of the hydraulic system. The setting of the main gun can not only generate sufficient working pressure for the hydraulic system, but also control the flow of hydraulic oil to ensure the normal operation of each component and the normal operation of the excavator.
The working principle of the main gun is: when the hydraulic pump starts to work, the hydraulic oil will be pressed into the main gun, flowing inside the main gun to generate a high-pressure oil flow, and then sent to the hydraulic motor and other hydraulic components through pipes. Since the main gun has a certain built-in regulating valve, the high-pressure oil flow can be adjusted as needed to meet the needs of different working conditions.
2. The function and working principle of the auxiliary relief valve of the excavator
The auxiliary relief valve of the excavator is a relief valve in the hydraulic system of the excavator. It mainly plays the role of preventing overload of the hydraulic system and protecting system components from damage. When hydraulic oil flows through the auxiliary relief valve, if the system's working pressure exceeds the set value, the valve will automatically open and slowly release the excess hydraulic oil back to the tank, thereby protecting the hydraulic components from damage.
The working principle of the auxiliary relief valve is: when the working pressure of the hydraulic system exceeds the set value, the steel balls and springs separate, and the hydraulic oil will flow back to the tank through the channel in the valve. By adjusting the tightness of the spring, the valve opening pressure can be controlled to adapt to different working needs.
In short, the excavator main gun and auxiliary relief valve are important components in the excavator hydraulic system. They mainly play the role of controlling the pressure and flow of the hydraulic system, ensuring the normal operation of the hydraulic system and protecting system components from damage.