239-8774 CAT Relief Valve Description
The YNF18056 239-8774 Relief Valve is a hydraulic pressure control component designed for compatible CAT excavator hydraulic systems. As part of the hydraulic control system, the relief valve regulates excessive pressure by allowing hydraulic oil to release when the pressure exceeds the preset range, helping protect hydraulic pumps, valves, cylinders, and other important components.
Manufactured with precision machining technology and durable metal materials, this hydraulic relief valve provides accurate pressure control, reliable sealing performance, and stable operation during continuous excavator working conditions. Its robust structure helps maintain hydraulic system efficiency and reduces the risk of pressure-related failures.
The 239-8774 CAT relief valve is suitable for hydraulic system repair, maintenance, and overhaul applications. Replacing worn or damaged relief valves helps restore proper pressure regulation, improve machine performance, and support reliable operation of construction equipment.
239-8774 CAT Relief Valve Technical Data Sheet
| Parameter |
Specification |
| YNF Part Number |
YNF18056 |
| OEM Part Number |
239-8774 |
| Product Name |
Relief Valve |
| Alternative Name |
Hydraulic Relief Valve / Pressure Control Valve |
| Product Type |
Hydraulic Control Component |
| Function |
Hydraulic Pressure Regulation |
| Installation Position |
Hydraulic Control Valve System |
| Material |
High-Strength Metal |
| Manufacturing Process |
Precision Machining |
| Application |
CAT Excavator Hydraulic System |
| Compatible Brand |
CAT |
| Quality Type |
Aftermarket Replacement |
| Condition |
New |
| Brand |
YNF |
| Origin |
China |
| MOQ |
1 Piece |
| Shipping Method |
Air, Sea, Express |
| Payment Terms |
T/T, PayPal, Western Union |
239-8774 CAT Relief Valve Applications
| Application |
Description |
| CAT Excavator Hydraulic System |
Relief valve replacement |
| Hydraulic Control Valve |
Controls system pressure |
| Main Hydraulic Circuit |
Protects components from overpressure |
| Hydraulic Repair Service |
Replaces damaged valve components |
| Equipment Maintenance |
Restores hydraulic pressure stability |
| Construction Machinery |
Supports reliable working operation |
239-8774 CAT Relief Valve Detail Display
The 239-8774 Relief Valve is a hydraulic pressure control component that regulates system pressure and helps protect CAT excavator hydraulic components.
A worn relief valve may cause unstable pressure, reduced hydraulic efficiency, or abnormal machine operation. Replacing the valve helps maintain reliable hydraulic performance.
FAQ
Q: What is the function of the 239-8774 relief valve?
A: It regulates hydraulic pressure and protects the hydraulic system from excessive pressure.
Q: Which equipment uses this relief valve?
A: It is designed for compatible CAT excavator hydraulic systems.
Q: Is this a new replacement valve?
A: Yes. It is a new aftermarket hydraulic relief valve replacement.
