GVO 7Y4267 M5X130 Swing Motor Check Valve Safety Relief Valve Control Valve for Excavator Hydraulic Parts Construction Machinery

GVO 7Y4267 M5X130 Swing Motor Check Valve Safety Relief Valve Control Valve for Excavator Hydraulic Parts Construction Machinery

 Key attribute

Product profile

• Integrated Safety Relief Valve The built-in relief valve serves as the primary safety device for the swing circuit. When system pressure exceeds the preset limit during swing start or stop, the valve opens instantly to release excess hydraulic oil back to the tank, preventing overload, overheating, and damage to the swing motor assembly. Notably, the relief valve can control pressure in two stages (high and low) to ensure smooth operation and reduce shock when the upper structure starts or stops swinging.
• Make-Up (Check) Valve for Cavitation Prevention The make-up valve, also known as a check valve or anti-reaction valve, prevents cavitation damage by supplying oil to the motor's inlet when a vacuum occurs during sudden stops or overrunning loads. In swing applications, the heavy upper structure wants to keep rotating due to momentum after the control valve is neutralized. The make-up valve bleeds off trapped, compressed oil at the exact moment of stopping, bringing the machine to a smooth, controlled halt and preventing destructive cavitation that can erode internal components.

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  Guangzhou GVO Precision Hydraulic Co., Ltd. is a professional manufacturer and exporter of hydraulic components, electrical systems, and engine parts for excavators. Since 2017, we have been serving the global construction machinery industry from Guangzhou, China, building a reputation for reliability.

  Our product coverage includes hydraulic pumps, gear pumps, relief valves, throttle motors, sensors, solenoid valves, regulators, wiring harnesses, and engine parts. We are compatible with major brands such as Komatsu, Kobelco, Hitachi, Hyundai, Doosan, Sany, XCMG, JCB, and Case. Over 1,000 part numbers are kept in stock.

 Our logistics support includes air, sea, and express shipping. We handle export documents and work to ensure timely delivery to customers in more than 30 countries. As a factory-direct supplier, we control quality and cost from raw material to finished product.

Our after-sales support is responsive. If you are not sure about the model, we help you confirm it. If you have any problem after receiving the goods, we stay available to help you solve it. No matter the order size, we treat everyone the same.