GVO 4469380 4469301 146229334 Excavator ZX450 ZX450-3 ZX470-3 Auxiliary Relief Valve Control Valve Safety Valve

GVO 4469380 4469301 146229334 Excavator ZX450 ZX450-3 ZX470-3 Auxiliary Relief Valve Control Valve 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

This relief valve is specifically designed for use with Hitachi ZX450, ZX450-3, and ZX470-3 medium-duty heavy-duty excavators, capable of handling harsh conditions such as prolonged continuous operation and high-frequency impacts from hydraulic breakers. The optimized internal valve core flow channel structure enhances its resistance to impurities, reducing valve core jamming caused by hydraulic oil contaminants.

The valve body is constructed from high-strength alloy steel, strengthened through heat treatment and precision internal honing. The valve core is precisely ground and matched, enabling accurate and stable control of hydraulic circuit pressure.

When the system pressure is overloaded, the relief valve quickly opens to release pressure, effectively protecting the main hydraulic pump and multi-way distribution valve, preventing damage to core hydraulic components from high-pressure impacts.

The installation dimensions fully match the original factory standard, allowing for direct plug-in interchange. It provides stable and reliable pressure regulation, widely adaptable to heavy-duty construction scenarios such as mining and large-scale earthmoving.

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.