31Q4-17750 31Q8-17790 Secondary Relief Valve for Excavator R210-7 R215-9 R220-7 R225-7

31Q4-17750 31Q8-17790 Secondary Relief Valve for Excavator R210-7 R215-9 R220-7 R225-7

 Key attributes

• Precise Overload Protection: Provides fast and accurate overload protection. When pressure in a specific circuit (e.g., boom, arm, bucket) reaches its set point, the valve opens instantly to relieve excess pressure, preventing damage to components like cylinders, hoses, and the pump.

• Optimized Circuit Performance: Prevents premature relief, which can cause a circuit to lose power and operate sluggishly. It ensures each hydraulic function operates at its intended pressure for maximum efficiency and power.

• Designed for Specific Models: The 31Q8-17790 is primarily used on larger models like the R225-7. Both valves are suitable for a range of modern excavators, including the R210-7, R215-9, R220-7, and R225-7.

If you need other relief valves, send us the related details please:

1.The pictures

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GVO – Why Customers Choose Us

• Massive Inventory – 40,000 m³ of ready stock means we have what you need, when you need it.

• Fast Shipping – We ship the day you order. No waiting, no excuses.

• Precision Matching – We verify every part against your machine specification before it ships.

• Brand Coverage – We stock parts for 13+ major brands, so you don't have to shop around.

• Flexible Options – We offer what fits your budget and requirements.

• Honest Pricing – No hidden fees, no markups. What you see is what you pay.

• Reliable Support – We don't disappear after the sale. We're here before, during, and after.

Our Services-We Do More Than Just Ship Parts

Service	What You Get
Quality Assurance	Every part inspected before shipment
Custom Orders	We locate and supply hard-to-find parts
After-Sales Support	Installation guidance and ongoing assistance
Wholesale Pricing	Competitive rates for dealers and bulk buyers
Technical Advice	Expert guidance on compatibility and performance

Our Promise – We treat every order like it's urgent. Because we know downtime costs you more than money — it costs time, trust, and progress.