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[Province: Zhejiang ]   
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Komatsu PC220 Excavator Hydraulic Cartridge Type Pressure Unloading Main Service Valve
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Komatsu PC220 Excavator Hydraulic Cartridge Type Pressure Unloading Main Service Valve

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Payment Terms: T/T,L/C,D/A,D/P,WU
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Basic Info.
  • Power: Hydraulic 
  • Standard or Nonstandard: Standard 
  • Pressure: High Pressure 
  • Structure: Shutoff 
  • Material: Others 
  • Temperature of Media: High Temperature 
  • Media: Oil 
  • Brand Name: Egmec 
  • Product:: Pressure unloading main service valves for Komatsu PC220 excavator with cartridge type 
  • Operation pressure:: 350bar /5075PSI 
  • Raw materials:: Stainless steel or hardened 45 carbon steel materials 
  • Application machine:: Komatsu PC220 excavator machine series 
  • Driven Type:: Piston type, pressure unloading 
  • Assembly type:: Standard cavity for Komatsu PC220 excavator hydraulic power system 
  • Medium:: Mineral based oil, such as 32#, 46# or equals medium 
  • Medium recommended filtration:: 25 Micron or better 
  • Working temperature:: -20~+80℃ or as customers indicated 
  • Surface treatment:: Stainless steel original color, or chrome and zinc plated as indicated 
  • Model No.: Komatsu PC200-6C01 series -111038 
  • Place of Origin: Zhejiang  
  • Min.Order: 50 Set/Sets
  • Means of Transport: Express, Ocean, Air, Land
Supply Capacity
  • Production Capacity: 25000
  • Packing:Standard packing for exporting, both air or sea shipping
  • Delivery Date: Depending quantity
Brief introduction:

    The pressure unloading main service valves for Komatsu PC220 excavator is to unload the pressure when the excavator needs small pressure and execute the next step.

    Please check the pressure unloading valve or change the valve if there is troubleshooting of the hydraulic system as follow:

    When the driver starts the engine and the operate lever in neutral, the main pump output hydraulic oil through the pressure unloading valve directly back to the tank, the unloading pressure is 3MPa. But if the spool and seat of the unloading valve does not seal tightly due to dirty medium/oil, the main pump output oil in hydraulic system can not establish the high pressure when the excavator is operating. The second problem is the damage of the pressure unloading valve O rings, which will lead the hydraulic oil in the main pumps flows to the tank directly, can not keep the normal pressure. Please check and change the pressure unloading valve if the problems above can not be fixed.

Komatsu PC220 Excavator Hydraulic Cartridge Type Pressure Unloading Main Service Valve
Komatsu PC220 Excavator Hydraulic Cartridge Type Pressure Unloading Main Service Valve
Send message to this supplier
Mr. Eric (Exporting Manager)
Tel: 86-574-86303599
Enter between 20 to 3,000 chatacters.
Contact Method
Egmec Industry Co., Ltd.
Economic Development Zone, Ningbo, Zhejiang, China (Mainland) / 315201
Fax: 86-574-56708372
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