723-40-50100 Main Relief Valve for Komatsu PC200-6, PC200LC-6, PC210-6

The SPARKLING MACHINERY NEW 723-40-50100 Relief Valve Photo:

Why Choose the SPARKLING 723-40-50100 Relief Valve?

• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •    - Precise Pressure Calibration: Specifically engineered to match the hydraulic curve of the Komatsu 6D95 engine platforms, providing the optimal balance of power and protection.

                                                                  •    - Rapid Response Poppet: Features an innovative internal piston design that reacts in milliseconds to pressure spikes, effectively absorbing hydraulic shocks.

                                                                  •    - Wear-Resistant Alloy Steel: The internal valve seat and poppet are manufactured from hardened tool steel to resist the high-velocity "oil washing" that can cause pressure drift in lower-quality valves.

                                                                  •    - Direct OEM Interchange: Designed as a drop-in replacement for part 723-40-50100, ensuring a perfect seal and fit within the main control block.

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Q&A Section

Q1: How do I know if my 723-40-50100 main relief valve is failing?

A: Common symptoms include the entire machine feeling "weak" (lack of breakout force in all functions), hydraulic oil overheating rapidly, or the engine not "loading up" when you reach the end of a cylinder stroke. If the valve is stuck open, oil will bypass constantly, wasting energy and generating heat.

Q2: Can I adjust the pressure on the 723-40-50100?

A: Yes, it features an adjustment screw under the top cap. However, this should only be done using a calibrated hydraulic pressure gauge and following the Komatsu shop manual. Setting the pressure too high can cause permanent damage to your hydraulic pumps.

Q3: Is this valve used for the Swing or Travel functions specifically?

A: This is the Main Relief Valve, which sets the pressure for the entire system. While there are separate safety valves for the swing and travel circuits, the 723-40-50100 acts as the ultimate master control for the main pump output.

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   - Founded in 2013, SPARKLING focuses on high-quality excavator parts across hydraulics, undercarriage, engines and electrical systems. We prioritize stability, precision and continuous service, offering worldwide distribution, tailored solutions and strict QC to help customers reduce cost and increase uptime.

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