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Main & Relief Valves

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Vendor: Komatsu
PC60-8 PC70-8 PC78US-8 Main Relief Valve Assy 723-20-63300
Regular price $ 98 -
Vendor: Others
Hydraulic Relief Valve RV10-20A-0-N-33 for HydraForce
Regular price $ 55 -
Vendor: Others
Hydraulic Relief Valve RV10-20A-0-N-12 for HydraForce
Regular price $ 55 -
Vendor: Others
Relief Valve RDDA-LAN Compatible for Sun Hydraulics
Regular price $ 82 -
Vendor: Volvo
Relief Valve VOE11802877 for Volvo EC15C EC17C EC18C EC35D ECR40D BL60 BL61 BL70
Regular price $ 90 -
Vendor: New Holland
Pressure Relief Valve 129842A2 119644A3 for New Holland Tractor Loader U80 LV80
Regular price $ 98 -
Vendor: Cummins
Pressure Relief Valve 3963808 3947799 for Dodge Cummins ISLE 5.9L Engine Bosch
Regular price $ 55 -
Vendor: Caterpillar
Track Adjuster Relief Valve & Grease Check Fitting Set 2S-5925 2S-5926 Compatible for Caterpillar 311B 312 313B 315 320B 322C 325D 330B
Regular price $ 36 -
Vendor: Others
Hydraulic Relief Valve for Hydraforce RV08-22A-0-N-7 RV0822A0N7
Regular price $ 80 -
Vendor: Caterpillar
Relief Valve 119-5186 1195186 for Caterpillar CAT Excavator 311B 311C 312B 314C
Regular price $ 108 -
Vendor: Others
Relief Valve RV50-22A-0-P-50 For HydraForce
Regular price $ 80 -
Vendor: Genie
Pressure Relief Valve 32722GT For Genie S-40/45 S-60/65 S-80/85 Z-60/34 Z-62/40
Regular price $ 98
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.