568-3724 568-3725 Excavator E345D E349D E349D2 E390F Control Valve Pressure Relief Valve Hydraulic Safety Valve

568-3724 568-3725 Excavator E345D E349D E349D2 E390F Control 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

Compatible with E345D, E349D, and E349D2 excavators, this branch overload relief valve (commonly known as the secondary cannon) is a 1:1 replica of the original valve body specifications. Threads, oil holes, and sealing grooves perfectly match the distribution valve mounting holes, allowing for direct replacement without grinding.

The valve body is made of precision-ground, integrally hardened alloy steel, paired with high-pressure, wear-resistant fluororubber sealing rings. It independently controls the pressure of the boom, stick, and breaker in a single circuit. In heavy-duty mining operations, it provides rapid pressure relief and buffering during overload, effectively improving issues such as weak single-action movement, vibration, excessively high hydraulic oil temperature, and pressure fluctuations. Suitable for 45-49 ton heavy-duty excavators in mining and infrastructure heavy-duty conditions.

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.