Description
Vented Counterbalance Valve 4641386 (OEM) – Optimized Product Page Content
🔹 Product Overview
The Vented Counterbalance Valve with LG (Likely referring to a manufacturer who supplies parts, or the full part number is being used in a broader context) part number 4641386 is a highly specialized, safety-focused hydraulic component. A counterbalance valve’s primary function is to safely lock a hydraulic cylinder or motor in position (preventing uncontrolled movement, or “runaway”) and to smoothly control the speed of a lowering or resisting load that is being driven by gravity or external force.1 The “Vented” designation typically means the valve incorporates a feature (like a drain line) that eliminates pressure build-up in a control chamber, ensuring the pilot operation is predictable and consistent, often used in complex closed-loop systems.
This component is essential for ensuring that critical lift, boom, or extension cylinders operate safely and smoothly when lowering under load. The part number 4641386 is the necessary replacement for addressing dangerous issues such as uncontrolled component descent, cylinder drift, or jerky, erratic lowering movements, especially in applications where precise control is paramount.
🔹 Key Features & Benefits
✅ Load Holding Safety: Locks the hydraulic actuator in position, preventing load drift and unintended movement.2
✅ Smooth Motion Control: Controls the speed of lowering/retracting loads driven by gravity, preventing runaway.3
✅ Vented Design: Ensures reliable and stable pilot operation by managing control-chamber pressure.
✅ OEM Specification: Manufactured to meet the exact performance and safety requirements of the original equipment manufacturer (OEM).
🔹 Technical Details
| Detail | Specification |
| Part Number | 4641386 |
| Condition | 100% new OEM or high-quality aftermarket replacement |
| Type | Hydraulic Counterbalance Valve (Vented Cartridge Style) |
| Function | Locks fluid flow until piloted open; controls speed of overhauling loads. |
| Intended Use | Critical load-holding and speed control for cylinders or motors under gravity load. |
| Design Feature | Vented (Ensures predictable pilot operation) |
| Application Location | Screws directly into the cylinder port or a dedicated manifold block. |
| Warranty | 12 months against manufacturing defects |
🔹 Compatible Equipment Models & Applications
The Vented Counterbalance Valve 4641386 is used in heavy machinery requiring strict load-holding capabilities. Specific machine compatibility must be verified using the full equipment model and serial number:
| Equipment Type | Typical Applications (Examples) |
| Aerial Work Platforms | Main lift, telescope, or jib cylinder circuits. |
| Heavy Mobile Equipment | Stabilizer legs, outriggers, or crane boom controls. |
| Common Application | Crucial for the controlled and safe lowering/retraction of boom sections or cylinders supporting a significant load. |
🔹 Why Choose RQ Parts?
Safety Assurance: Guarantees the necessary load-holding and smooth descent control are fully restored.
Prevent Drift: Eliminates cylinder drift and ensures movement only occurs when intentionally piloted.
High Quality: Manufactured to ensure immediate and reliable sealing/opening under the specified pressure and pilot conditions.
Competitive Pricing: Cost-effective solution for replacing complex, safety-critical hydraulic control components.
Delivery
Delivery Times
Average Delivery Time is 10-15 days within worldwide.
For overseas delivery Message Us or Call Toll Free at +8618221399269
