Description
Product Overview
The rsityhalf Main Relief Valve is a precision‑engineered oil pressure relief gasket crafted from high‑strength metal alloy. Designed to meet OEM specifications, it fits Caterpillar excavator models CAT 312C, 315C, 318C, 320B, 320C, 322B, and 322C. The valve regulates hydraulic pressure, preventing overload and ensuring smooth operation. Its corrosion‑resistant finish guarantees longevity even in harsh job‑site conditions.
Usage
This valve is ideal for construction, mining, and demolition equipment where reliable hydraulic control is critical. Install it during routine maintenance or when replacing a worn gasket to restore optimal pressure regulation. Suitable for professional mechanics and fleet managers who demand minimal downtime and consistent performance.

Why Choose Us
rsityhalf combines rigorous quality testing with strict adherence to Caterpillar standards, delivering a part that matches or exceeds original equipment performance. Our dedicated support team assists with fit verification, and each valve undergoes dimensional inspection to ensure a perfect seal. Choose us for dependable parts, fast shipping, and responsive after‑sales service.
Key Features
- High‑strength metal construction for superior durability
- Exact OEM fit for CAT 312C‑322C excavator series
- Corrosion‑resistant coating extends service life
- Precise pressure relief to protect hydraulic system
- Easy installation with standard tools
FAQ
Is this valve compatible with all CAT excavator models?
The valve is engineered for CAT 312C, 315C, 318C, 320B, 320C, 322B, and 322C models. Verify your machine’s serial number for exact fit.
Can I install the valve myself?
Yes, the valve uses standard mounting hardware and can be installed with basic hand tools. Follow the included installation guide for best results.
What material is the valve made from?
It is fabricated from a high‑grade steel alloy with a protective anti‑corrosion coating, ensuring strength and longevity under heavy loads.
How does the valve protect my engine?
By regulating hydraulic pressure, the valve prevents excess pressure buildup that can damage seals and internal components, thereby extending engine life.
What is the warranty period?
All rsityhalf relief valves come with a 12‑month limited warranty covering manufacturing defects.





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