GVO C0003-30002 Excavator CLG904 CLG906 Main Relief Valve Pressure Relief Valve Hydraulic Safety Valve

GVO C0003-30002 Excavator CLG904 CLG906 Main Relief Valve Pressure Relief Valve Hydraulic Safety Valve

Product Description

The GVO excavator relief valve, compatible with Hitachi excavators, is a key pressure control valve in the hydraulic system. It regulates hydraulic pressure, releases overload pressure, protects core hydraulic components such as the main valve and hydraulic pump, and ensures stable operation of the entire machine.

This relief valve is precision-machined from high-quality steel and undergoes overall quenching treatment. Equipped with oil-resistant and high-pressure-resistant seals, it boasts excellent sealing performance, impact resistance, and wear resistance. Suitable for the high-pressure hydraulic conditions of excavators, it effectively prevents internal leakage, pressure loss, operational instability, and vibration.

Product Introduction

GVO offers bulk stock of 923G1 4V28-0 relief valves, compatible with the widely used LiuGong CLG904 and CLG906 mini excavators. Ample inventory supports large-volume orders. Products strictly replicate original factory processing standards; each relief valve undergoes high-pressure testing on a hydraulic bench before leaving the factory to eliminate defective products with jamming, pressure leakage, or leakage, ensuring consistent and stable quality.

1. Precision valve core for linear and stable pressure regulation. The micron-level precision-machined valve core ensures uniform spring rebound, allowing for continuous pressure locking during high-intensity operation of the hydraulic breaker without fluctuating pressure or sluggish operation, resulting in smooth operation.

2. Hardened alloy steel valve body for durability and resilience in harsh working conditions. The tempered valve body, combined with thickened high-pressure seals, resists mud and dust corrosion, withstands high and low temperatures and continuous high pressure, and is less prone to oil leakage and pressure loss over long-term use.

3. Automatic overpressure unloading protects the entire hydraulic assembly. The hydraulic circuit provides instantaneous buffering and pressure relief during overload, preventing high-pressure damage to pumps, valves, and cylinders. It solves three common problems—machine stalling, boom drop, and lack of digging power—in one go, reducing overhaul costs.

Packaging & Shipping

We use high-strength, environmentally friendly paper export packaging, which is reinforced, cushioned, and moisture-proof, suitable for long-distance international logistics transportation, and meets cross-border freight and environmental protection standards. International transportation adopts formal cross-border logistics, with full tracking of logistics information and supporting customs clearance documents to ensure smooth customs clearance and timely delivery of goods overseas.

Company Introduction

The GVO brand is a manufacturer of hydraulic components. We mainly produce the most comprehensive range of pilot pumps, gear pumps, relief valves, hydraulic pumps, electrical components, hydraulic parts, engine assemblies, traveling assemblies, rotating assemblies, distribution valves, and other components.

We are factory direct sellers without any middlemen profiting from price differences. The quality is definitely the best for you because we are the ones who produce them. We cannot tarnish our reputation. The prices are also the most favorable for you. There is a stable delivery speed.

We value every customer and provide you with the best service. We offer pre-sale, in-sale, and after-sale guarantees. Any problems will definitely be resolved for you. We are always available to serve you.